Hi, I am Timothy Lewis.
user
Hello. How may I serve you today?
assistant
I would like to change my existing reservation as my vacation got postponed. Can you help me with it?
user
Sure, please wait a moment I will check the reservation list.
assistant
Sure.
user
Thanks for waiting, we did not found any reservation by this name.
assistant
Ok, thank you.
user
Thanks for opting us.
assistant