You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephen Edwards.

ASSISTANT: How may I assist you?

USER: I had planned to go on a trip, but it was postponed to other dates.

ASSISTANT: Ok.

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found on your name.

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

ASSISTANT: Thank you for choosing us, have a nice day.