You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

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, please provide me the name to check for the reservation status.

USER: I am Mary Scott.

ASSISTANT: Please be on hold, I will get back to you in a minute with information.

USER: Sure.

ASSISTANT: Thank you for your patience.

USER: Ok.

ASSISTANT: Sorry to say, there is no active reservation have been found under your name in our database to amend it.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for reaching us with a query.