You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jason Miller.

ASSISTANT: How can I aid you today?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Sorry, no reservation found on your name.

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

ASSISTANT: Welcome, have a nice day.