You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?

ASSISTANT: Sure, I will help you to change your reservation.

USER: Thank you.

ASSISTANT: May I know on which name the reservation is made?

USER: I am Andrew Jones.

ASSISTANT: Please wait for the moment, while I search for the reservation on name of Andrew Jones.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our data base.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us, we hope see you again.