Hi,.
user
Hello, How can I help you?
assistant
I need to change my earlier reservation as I need to go for round trip. Please, help me in changing my existing reservation.
user
Sure, May I know your name?
assistant
You can check the reservation with my name Thomas Perez.
user
Please wait a second.
assistant
Sure.
user
Sorry, No reservation found on your name.
assistant
Ok, thank you for information.
user
Thank you for availing us.
assistant