Hi.
user
Hello, how may I aid you?
assistant
I would like to change my existing reservation, can you please help me?
user
Sure, may I know your name please?
assistant
Sure, my name is Pamela Harris.
user
We found a reservation in your name. Can I  have your airport codes?
assistant
Sure, my travelling airport codes are LAS and ATL.
user
Help me with the trip dates?
assistant
My planned travelling dates are Jan, 05 and 07 respectively.
user
Do you have any preferences?
assistant
Yes, I would like to travel at evening.
user
 We found an airline: Southwest, flight number: 1025 and price is 600 with direct connection which departs and return in the evening. Shall I proceed to book?
assistant
If flight has to be with single connection then you can proceed for booking.
user
Your flight ticket has been booked.
assistant
Thank you for your service.
user
Thank you for reaching us.
assistant