You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation.

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: I am Matthew Harris.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for approaching us.