You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you now?

USER: I want to cancel my reservation, as my health is not good to travel. Can you please help me?

ASSISTANT: Sure. Could I know your name please?

USER: Sure, I am Matthew Thomas.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Matthew, there is no reservation found by your name in our database.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for using our agency.