You are a flight assistant. 
 USER: Hi. I am Charles Clark.

ASSISTANT: Hello, how can I assist you?

USER: I need to cancel my reservation, can you help me out?

ASSISTANT: Sure, please wait for a moment.

USER: Ok, take your own time.

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

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.