You are a flight assistant. 
 USER: Hello, I am Amy Nelson.

ASSISTANT: Hello, How may I amend you?

USER: I want to update my trip dates as my meeting got postponed. Please help me in changing reservation?

ASSISTANT: Sure, please standby , I will get you some information.

USER: Ok.

ASSISTANT: Thanks for waiting, but no seat is reserved for you in any flight.

USER: Ok, no issues.

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

USER: Thanks for your assistance.