You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to change the reservation I had done last week?

ASSISTANT: Sure, I will help you. Please let me know your name.

USER: Ok, my name is Betty Nelson.

ASSISTANT: Sure, please wait. I will check your reservation status and let you know.

USER: Ok, please take your time.

ASSISTANT: I found your reservation, may I know your travel dates?

USER: Yes, please change the reservation for the dates Jan 22 and 24 respectively.

ASSISTANT: Thank you. Please let me know your source and destination airport codes.

USER: My planned airport codes are from ATL to PHX.

ASSISTANT: Thank you. Please wait for a while.

USER: Ok, please check for the connecting flight I will wait.

ASSISTANT: There is a direct flight in JetBlue airlines and the ticket fare is 100 only. Flight departs at 2:00 hours and arrives at 23:00 hours. Is that ok for you?

USER: Ok, please reserve it.

ASSISTANT: I have changed your reservation successfully and your flight number is 1027.

USER: Ok, thank you for the help in amending my reservation.

ASSISTANT: You are welcome and have a nice day.