Hi.
user
Hello. what can I do for you at this moment?
assistant
Will you please change my existing reservation? Because I am shifting my business to other place.
user
Sure, to get your reservation details I need you name please.
assistant
Sure, my name is Margaret Clark.
user
We have found reservation on your name. Please help me with your new travelling dates.
assistant
Sure, my trip dates are 07/07 - 07/09.
user
May I know your airport codes?
assistant
I will start from DFW to reach LAS.
user
Do you have any specific needs for this trip?
assistant
I am looking for a connecting flight.
user
Please wait, while  check available flight for you.
assistant
Sure.
user
I am sorry to say that we don't have any flights available on these dates.
assistant
Ok, thank you for help.
user
Thank you for reaching us.
assistant