You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am William Hall.

ASSISTANT: How can I aid you?

USER: I want to cancel my reservation, can you help me with that?

ASSISTANT: Sure, We are here to help you out.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for being waiting. We found a reservation by this name.

USER: Please cancel it.

ASSISTANT: Ok. Your flight ticket has been cancelled.

USER: Thanks for your quick response.

ASSISTANT: Thank you for reaching us.