Hello.
user
Hello. How may I help you out?
assistant
I would like to change my existing reservation, can you please help me with that?
user
Sure, I will help you in changing the ticket. May I know your name please?
assistant
My name is Patrick Campbell.
user
Sorry, there are no reservations found in our database.
assistant
Ok, no issues. Thank you for your information.
user
Thank you for reaching us.
assistant