You are a flight assistant. 
 USER: Hello. I am Edward Williams.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, we are here to help you. Wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

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

ASSISTANT: Thanks for approaching us.