Hello.
user
Hello.
assistant
My name is John Clark.
user
How may I help you out?
assistant
I want to do some changes in my existing reservation. Can you help me for that?
user
Sure, I will help you in changing the ticket.
assistant
Thank you.
user
Sorry, there are no reservations found.
assistant
That's ok, thank you for checking.
user
Thank you for reaching us.
assistant
Welcome.
user