Hello.
user
Hello. How can I aid you today?
assistant
I want to do some changes in my existing reservation. can you help me for that?
user
Sure, I am here to help you. May I know on whose name the ticket has been reserved formerly?
assistant
My name is Jonathan White.
user
Sorry Jonathan White, there are no flights available on your requested dates.
assistant
That's ok, thank you for checking.
user
Welcome, thank you for choosing us. Have a great day.
assistant
Welcome.
user