Hi.
user
Hello. How may I help you today?
assistant
 My business meeting has been postponed. So, I would like to change my reservation.
user
Sure, I will help you with that. Please wait. May I know your name please?
assistant
I have reserved my flight ticket in the name of Matthew Campbell.
user
I am sorry there is no reservation found.
assistant
Ok, fine not an issue. Thank you for your help.
user
Thank you for contacting us.
assistant