Hello.
user
Hello. How may I help you?
assistant
My name is Robert Garcia.
user
Yes Garcia.
assistant
Actually I have a seminar to present in Las Vegas,  but due to some problems, the location of seminar is changed to Chicago ORD. Could you help me in changing the existing reservation?
user
ok. Sorry there is no reservation found for you to change.
assistant
That's ok. Thank you for your time.
user
Thank you for choosing us.
assistant