Question: "We Don't Talk Anymore" and "One Call Away" are by which American singer?

Context paragraphs:
One Call Away (Chingy song): "One Call Away" is a song by American rapper Chingy.  It's the third and final single off his debut album "Jackpot" (2003).  It features singer J-Weav singing the chorus.  The song was kept from being number one by Usher's "Yeah! " for five consecutive weeks, peaking at number two on the US "Billboard" Hot 100.  It became a number one hit on the Hot Rap Songs chart for three weeks and peaked at numbers 3 and 6 on the Hot R&B/Hip-Hop Songs and Mainstream Top 40 charts respectively.  It also reached the top 40 in countries like Australia, Ireland, New Zealand and the UK.  A video for the single (directed by Erik White) was released that featured actress Keisha Knight-Pulliam and streetball player Philip "Hot Sauce" Champion.  The radio version of the song was featured on the 2004 compilation album "Now That's What I Call Music!  16".

Shy Carter: Shy Carter (born August 21, 1984), is an American songwriter, record producer, and singer.  Recently, Shy has written for top acts such as Meghan Trainor, Jason Derulo, Charlie Puth, Faith Hill, Tim McGraw, and Billy Currington.  He co-wrote Charlie Puth's two-time platinum hit "One Call Away" which hit No. 1 on "Billboard"'s Adult Top 40 chart.  In 2009, he co-wrote "Someday" with Rob Thomas, which spent over 40 weeks in the Top 5 and became a No. 1 hit on "Billboard"' s Adult Top 40 chart. " Stuck Like Glue", his collaboration with Sugarland, debuted on the "Billboard" Hot 100 at No. 20 and became the 11th most downloaded country music song of all time.  He has also been featured on Latin artist Gloria Trevi's #1 song "Habla Blah Blah".  He's also worked with Faith Hill, Ashanti, and Chingy.  Carter also wrote a song titled "Bring it Back", which was released on August 7, 2015 and hit the Top 40 of "Billboard"'s Rhythmic chart.

We Don't Talk Anymore (Cliff Richard song): "We Don't Talk Anymore" is a song recorded by Cliff Richard that reached number one in the UK Singles Chart in August 1979, remaining there for four weeks.  Produced by The Shadows' rhythm guitarist, Bruce Welch, and written by Alan Tarney, it was Cliff Richard's tenth UK number one and his first since "Congratulations" in 1968.

Charlie Puth discography: American singer Charlie Puth has released one studio album, three extended plays, one video album, three singles, and three promotional singles. Puth released two extended plays, "The Otto Tunes" (2010) and "Ego" (2013), as an independent artist.  In 2015 he signed with Atlantic Records and released his debut single "Marvin Gaye", which features guest vocals from Meghan Trainor.  The single has been certified 2× Platinum in Australia, topped the charts in New Zealand, Ireland, and the United Kingdom, and peaked at number 21 on the US "Billboard" Hot 100.  Puth wrote, co-produced, and was featured on a song with Wiz Khalifa, "See You Again", included in the "Furious 7" soundtrack.  On May 1, 2015, Puth released an EP, "Some Type of Love".  The pre-order for Puth's debut studio album "Nine Track Mind" started on August 20, 2015 along with the second single "One Call Away".  The album was officially released on January 29, 2016.

Jackpot (Chingy album): Jackpot is the debut studio album by American rapper Chingy.  Sales of the album achieved Double Platinum in the US.  It was released on July 15, 2003, by the Disturbing tha Peace label.  Anchored by the smash single "Right Thurr", this album also had two other top three hits, "Holidae In" featuring Ludacris and Snoop Dogg, and "One Call Away" featuring J-Weav.  The album was produced by The Trak Starz except for "Bagg Up", which was produced by DJ Quik.  The enhanced version of the album features the uncut video of "Right Thurr".

We Don't Talk Anymore (Charlie Puth song): "We Don't Talk Anymore" is a song produced and performed by American singer Charlie Puth from his debut studio album "Nine Track Mind" (2016).  It contains guest vocals from Selena Gomez.  Jacob Kasher co-wrote the track with the artists.  The song was released on May 24, 2016, as the third and final single from the album.  Musically, it is a pop song with tropical-inspired production.

Wanted (Cliff Richard album): Wanted is the 70th studio album by British singer Cliff Richard, released by Papillion on 5 November 2001 in the UK.  This album was produced by Alan Tarney who had previously worked with Richard on the hits including "We Don't Talk Anymore", "Dreaming", "Wired for Sound" and "Some People".  The two had not worked together since the 1989 album "Stronger".  The album reached #11 in the UK Albums Chart and stayed in the charts for 8 weeks.

One Call Away (Charlie Puth song): "One Call Away" is a song by American singer Charlie Puth for his debut album "Nine Track Mind".  It was released on August 20, 2015 by Atlantic Records as the second single from the album, after the lead single "Marvin Gaye".  "One Call Away" is a gospel-infused pop soul song.  It reached number 12 on the "Billboard" Hot 100, making it Puth's third top 40 single in the US and his third highest-charting single as a lead artist to date, behind "We Don't Talk Anymore" and "Attention".

Always Guaranteed: Always Guaranteed is studio album by Cliff Richard, released in 1987.  The album peaked at number 4 in the UK album charts, and spent a total of 24 weeks on the chart over 1987–88.  The album was certified Platinum by the BPI and achieved sales over 1.3 million globally.  The album was produced by Alan Tarney who had produced two of Richard's previous albums, "Wired for Sound" and "I'm No Hero" in the early 1980s and written Richard's highest selling single "We Don't Talk Anymore" in 1979.  Tarney wrote all but one track on the album.

Private Collection: 1979–1988: Private Collection: 1979–1988 is a 1988 compilation album by Cliff Richard, featuring songs such as the number one single "We Don't Talk Anymore" from 1979, to his latest release at the time, the Christmas number one hit "Mistletoe and Wine".  The album reached number one on the UK Albums Chart.

Supporting paragraphs: One Call Away (Charlie Puth song) We Don't Talk Anymore (Charlie Puth song)
Answer: Charlie Puth