You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Steven Thompson.

ASSISTANT: How can I assist you?

USER: I want to cancel my reservation, due to health problem, can you help me?

ASSISTANT: Sure, I will help you. Let me check your reservation status first.

USER: Sure, take your time.

ASSISTANT: Steven, I did not find any reservation by your name in our database.

USER: That's ok, thank you for your information.

ASSISTANT: You are welcome and thank you for choosing us.