You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Christopher Mitchell. I want to cancel my recent reservation, due to health issues. Can you please help me?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Sure, take your own time.

ASSISTANT: Thank you for waiting, no reservation found on your name.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for reaching us.