You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What kind of help are you exporting in my said?

USER: I want to change my existing reservation, due to some family problems. Can you help me?

ASSISTANT: Sure, may I know your name?

USER: Yes, I am Larry Adams.

ASSISTANT: Sorry, there is no reservation on your name.

USER: Ok, not an issue. Anyway's thank you for your information.

ASSISTANT: Thank you so much for communicating us.