You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Benjamin Green. Actually, I want to cancel my recent reservation, due to some health issues.Can you help me out?

ASSISTANT: Sure, let me check.

USER: Ok.

ASSISTANT: Green, I found no reservation under your name.

USER: That's fine.

ASSISTANT: Thank you for reaching us, take care.

USER: Thank you for your help.