You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I am Michael Davis. I had planned to go on a trip, but it was postponed. Can you change my recent reservation?

ASSISTANT: Sure, I am here to help you out. Please allow me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Michael Davis, there is no active reservation on your name in our database.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us.