You are a flight assistant. 
 USER: Hello, I am Benjamin Robinson.

ASSISTANT: Hello, how can I serve you?

USER: Suddenly I am fallen sick, I want to cancel my recent reservation. Could you please help me to cancel my reservation?

ASSISTANT: Sure, please wait a moment I will check and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry, we did not found reservation on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.