You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, may I know your name?

USER: My name is Larry Miller.

ASSISTANT: Give me a minute for checking.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no reservation found under your name.

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

ASSISTANT: Thank you for opting us.