You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Michael Campbell. Owing to emergency, I need to cancel my recent reservation. Please help me in that.

ASSISTANT: Sure, let me check your reservation details in our database.

USER: Sure.

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

USER: No problem, thanks for you information.

ASSISTANT: Thank you for reaching us.