You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Ruth Green.

ASSISTANT: How can I assist you today?

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

ASSISTANT: Sure, will you please give me a moment? Thanks for waiting, there is no reservation found under your name.

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

ASSISTANT: Welcome, have a great day.