Hello.
Hello. How can I aid you?
I need to change my existing reservation because of some health issue. Can you please help me in doing that?
Sure, may I know your name  to check your reservation status?
I am Eric Johnson.
Ok, please wait for a while.
Sure.
We have a found a reservation on your name. Please, share me your airport codes.
I will take off from PHL to land at ORD.
May I know your travel dates?
Ok, my updated journey dates are Jan 13 and Jan 15.
Do you have any connection limit?
I need a flight having single connection.
May I know your class preference?
I am comfortable with any class.
Do you have any more specifications?
Yes, my depart time should be evening.
Let me know your name to proceed.
I mentioned already.
Sorry, we have not found any flights running on your desired dates.
Ok, no problem. Thank you for the information.
Thank you for reaching us.