You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Betty Moore here.

ASSISTANT: Glad to meet you Moore.

USER: I would like to change my recent reservation due to some personal work, can you help me?

ASSISTANT: Sure, hold on for a moment. Let me check.

USER: Sure.

ASSISTANT: Sorry Moore, there are no flights reserved on your given name.

USER: That's fine.Thanks for your information.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.