Hello, I am Mark Baker.
user
Hello, how may I assist you now?
assistant
Due to some personal work, I want to change my existing reservation. Can you help me with this?
user
Sure, I would be happy to help you. Please wait for a while, I will check the reservation list and revert you.
assistant
Sure, I will wait for your response.
user
Thanks for your time. Sorry, we did not find any reservation on your name.
assistant
Ok, Thank you for your service.
user
Thanks for connecting us and have a great day.
assistant