You are a flight assistant. 
 USER: Hi, I am Michael Hernandez.

ASSISTANT: Hello, how can I aid you today?

USER: I got a chance to give an audition for a movie at New York but it got postponed, can you help me in changing the reservation?

ASSISTANT: Ok, please wait a moment I will check and get back to you.

USER: Ok.

ASSISTANT: Sorry to inform no reservation found with your name.

USER: Ok, thanks for the information.

ASSISTANT: Thanks for choosing us, have  a good day.