You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how could I assist you today?

USER: I am Rachel Baker. My business meeting got postponed, can you please help me in changing the reservation?

ASSISTANT: Sure, I will help you. Please wait for some time.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no existing reservation find on your name.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your quick response.