You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amy Phillips.

ASSISTANT: Amy, how may I aid you?

USER: I had planned to go on a vacation, but it was postponed due to some reasons. Can you change my recent reservation?

ASSISTANT: Sure, I can help you to change your reservation. Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found by your name.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Anyways, thank you for checking.