You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: I would like to change my flight reservation as my trip got postponed, can you please help me?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name to check your reservation status?

USER: Jason Hill.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: Sorry we did not find any reservation against your name in our database.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for approaching us.