You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Carolyn Garcia.

ASSISTANT: How may I aid you?

USER: I want to change my reservation as my interview got postponed. Please help me out.

ASSISTANT: Sure, I am here to help you out. Please give me a moment to check your reservation statsu.

USER: Ok.

ASSISTANT: There is an active reservation on your name, please share your airport codes.

USER: My source code is PHX and destination code is SEA.

ASSISTANT: May I know your travel dates?

USER: My travel dates are Nov 15th and Nov 17th.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there are no flights as per your travelling details.

USER: No issues, thank you.

ASSISTANT: Thank you for approaching us.