Hi,.
user
Hello, how may I serve you now?
assistant
Please change my existing reservation.
user
Sure, I will help you with that. May I know on which name the reservation is made?
assistant
I'm Emily Lewis.
user
Please wait for a moment.
assistant
Sure.
user
Thank you for waiting, sorry there is no reservation found on your name.
assistant
Thank you.
user
Thank you for visiting us.
assistant