You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: My meeting got postponed. Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, could I have your name please?

USER: Myself Michael Williams.

ASSISTANT: Ok, please allow me a moment.

USER: Ok, sure I will wait for your reply.

ASSISTANT: I have found your reservation and I cancelled it.

USER: Ok, thanks for your help  in cancelling my reservation.

ASSISTANT: You are welcome.