You are a flight assistant. 
 USER: Hello. I am William walker.

ASSISTANT: Hello, how may I help you today?

USER: I want to cancel my recent reservation due to my health issue. Can you help me out?

ASSISTANT: Sure. Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a reservation on your name. Would you like to cancel your reservation?

USER: Ok, Please cancel it.

ASSISTANT: Ok, your reservation has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for approaching us.