Hi.
user
Hello. How can I assist you?
assistant
I have to change my flight ticket reservation done in the last week, can you please help me in changing my flight ticket?
user
Sure, can I know your name please?
assistant
Sure, my name is Jerry Adams.
user
Sorry Adams, there is  no reservation found on your name.
assistant
Ok, that's fine. Thank you for your information.
user
Thank you for approaching us.
assistant