You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am William Mitchell. I would like to cancel my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, I will be happy to help you. Please wait, I will check your reservation status.

USER: Sure, take your time.

ASSISTANT: Sorry William, I have not found any reservation under your name in our database.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: You are welcome and thank you for choosing us.

USER: You are welcome.