Hello.
user
Hello, how may I aid you today?
assistant
Please change my existing reservation.
user
Sure, we are here to help you.
assistant
Thank you.
user
Can I have your name to proceed?
assistant
I reserved a seat with my name John Green.
user
Ok, please wait a moment.
assistant
Sure.
user
Thank you for you time, sorry, no reservation found with provided name. Thank you for availing us.
assistant
Ok, Thanks for the response.
user