Hello.
user
Hello, how may I aid you today?
assistant
I want to change my existing reservation due to prepone of my exams. Can you help me in that?
user
Sure, I am here to help you out. Please provide me your name to check the reservation status.
assistant
Myself Gary Roberts.
user
Happy to inform you that, I found an active reservation on your name in our database. Kindly mention me your travel dates which you have planned.
assistant
My trip dates are Jan 08 to Jan 10.
user
 Gary Roberts, can you provide me your location airport codes?
assistant
My preferred airport codes are MSP to LAS.
user
Is there any specifications to met?
assistant
I would like to fly in connecting flight.
user
Sorry Gary Roberts, there is no flight as per your requirement.
assistant
Ok, no problem. Thank you.
user
 Gary Roberts, thank you for reaching us.
assistant