You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name?

USER: Sure, I am David Anderson.

ASSISTANT: Ok, how may I amend you today?

USER: I want to cancel my recent reservation, due to some personal work. Can you please cancel my reservation?

ASSISTANT: Sure, we are here to help you for booking. Please wait for a while, I will check with the booking that you have done.

USER: Sure.

ASSISTANT: Thanks for your time, there was no earlier reservation found on your name.

USER: Ok. Thank you for your kind information.

ASSISTANT: Thank you for availing us.