You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may  I guide you?

USER: My business meeting got postponed, so I want to change my reservation.

ASSISTANT: Sure, I will help you. Can you please tell me your name?

USER: My name is Edward Garcia.

ASSISTANT: Sorry, there is no reservation with your name to change further.

USER: No problem, thank you for helping me.

ASSISTANT: That's ok, thank you for the information.