You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I best assist you?

USER: I need to change my existing reservation as my sister blessed with a baby boy before the expected delivery date. Can you please help me in that?

ASSISTANT: Sure, I can help you with it. May I know your name to check the reservation status.?

USER: My name is Richard Moore.

ASSISTANT: Just wait a moment. I will revert to you.

USER: Sure.

ASSISTANT: Thanks for your time. There was no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for connecting with us.

USER: Thanks for your information.

ASSISTANT: Have a wonderful day.