Hello.
Hello. How may I serve you today?
Can you help me in changing my existing reservation?
Sure, may I know your name please?
I am Helen Robinson.
Ok, please wait a moment I'll check the reservation list.
Sure.
Thank you for waiting, we found a reservation by this name.
OK.
Can I know your planned travelling dates?
I want to travel on 09/29, and return on 10/01.
Please share your source and destination airport codes.
 I need to leave from my nearest airport MSP to reach DEN.
Do you have any other requirements to met?
I need a connecting flight.
 We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.
Ok, no problem.
Thank you for approaching us.