You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I just want to cancel my recently done reservation, because of some health issues. Can you please help me in this?

ASSISTANT: Sure, I can help you to cancel your reservation. May I know your name?

USER: My name is Brandon Moore here.

ASSISTANT: Brandon, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found by your name.

USER: Ok, no problem.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.