I am Jack Walker.
user
Hello, how can I provide assistance to you?
assistant
I need to change my existing reservation, can you please help me with that?
user
Sure, we are here to help you. Please wait for a while.
assistant
Sure.
user
Thank you for waiting. Sorry we couldn't find any reservation with your name.
assistant
Ok, no problem.
user
Thank you for opting us.
assistant
Thanks for your information.
user