You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: As I have emergency meeting in office, I want to cancel my reservation, can you help me?

ASSISTANT: Sure. Let me know your name please.

USER: My name Charles Jones.

ASSISTANT: Charles, please give me a moment.

USER: Ok.

ASSISTANT: There is no reservation found under your name, Charles.

USER: No problem. Thank you for checking.

ASSISTANT: Thank you for reaching us.