You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am Anthony Davis. Owing an emergency, I want to cancel my reservation. Can you help me for that?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: Sorry, I didn't find any reservation on your name in our database.

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

ASSISTANT: Welcome, thank you for opting us.

USER: Welcome.