Hi. I am Mary Garcia.
user
Hello, how can I help you?
assistant
I booked a ticket for Houston, now I want to change my destination to Boston, will you help me with that?
user
Sure, I will help you. Just wait for a while.
assistant
Sure.
user
Sorry Mary, there is no reservation found with your name in our database to change.
assistant
Fine, thank you for the information.
user
It's my pleasure.
assistant