You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Larry Davis.

ASSISTANT: What type of service you are expecting from us?

USER: Owing an emergency, I want to cancel my recent reservation. Can you please help me out?

ASSISTANT: Sure, I am here to help you with that.

USER: thank you.

ASSISTANT: Ok, wait for a minute.

USER: Sure, I will wait for your information.

ASSISTANT: Sorry to say that, there is no reservation found on your name in our database.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for approaching us.