You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I serve you today?

USER: Will you be my helping hand in cancelling my reservation as the meeting which I want to attend got postponed?

ASSISTANT: Sure. Will you please mention your name?

USER: I am Joseph Taylor.

ASSISTANT: Please wait for couple of minutes, I will revert to you.

USER: Ok.

ASSISTANT: Thanks for being patient, no reservation is found on your name to proceed further.

USER: It's ok, thank you for your kind information.

ASSISTANT: Ok, thanks for choosing us.