You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name please?

USER: Sure, I am Sarah Lopez. I want to book a direct flight to enjoy Holiday festival at Phoenix, AZ - PHX.

ASSISTANT: Sure, let me know your source details.

USER: My source is New York, NY - EWR.

ASSISTANT: Ok, please assign your journey dates.

USER: My journey dates are 09/02 and 09/04.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thanks for remaining so positive, we are unable to provide you flight in between your journey points due to terminal up gradation at your destination airport.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.