Hi.
user
Hello, how may I aid you today?
assistant
I am Mark Smith. Can you please help me in changing my recent reservation?
user
Sure, we are happy to help you.
assistant
Thank you.
user
Please wait for a while.
assistant
Sure.
user
Sorry to say that, there is no active reservation found on your name.
assistant
No issues, thank you for your information.
user
Thank you for communicating with us.
assistant