You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I  help you?

USER: Can you help me to cancel the recent reservation my friend had done on the name Brian King?

ASSISTANT: ok, just a moment please.

USER: Ok, please take your time.

ASSISTANT: I am sorry no flights found on your name.

USER: Ok, that is not a problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for assisting me.