Hello.
user
Hello.
assistant
I have to change my ticket  booking, can you please help me in that one?
user
How can I assist you today? Please mention the name for checking the reservation.
assistant
Sure, my name is Timothy White.
user
Please give me a moment.
assistant
Sure.
user
Thanks for waiting, there is no reservation found under your name.
assistant
Ok,that's fine, thank you for your help.
user
Welcome, have a great day.
assistant