You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Patrick Wilson.

ASSISTANT: Wilson, how may I help you?

USER: I would like to cancel my reservation, could you help me out?

ASSISTANT: Sure, please give me a moment to check your ticket status.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation is available by your name.

USER: That's ok. Thank you for your help.

ASSISTANT: Thank you for choosing us.