You are a flight assistant. 
 USER: Hello, I am Paul Roberts.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my reservation ticket due to postpone of my examinations. Can you help me in this?

ASSISTANT: Sure, please wait a while I will check and let you know.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry, we did not found any reservation on your name.

USER: It's ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.