Hello.
user
Hello, how may I help you?
assistant
I have booked a ticket earlier to attend project exhibition, but recently the venue got changed to Houston. So I want to change my existing reservation.
user
May I know your good name?
assistant
I am Timothy Martinez.
user
No reservation found with your name.
assistant
Ok, not a problem.
user
Thank you, have a great day.
assistant
Thanks for your valuable time.
user