Hello.
user
Hello, how can I help you?
assistant
I want to change my existing reservation due to health issues, can you please help me with that?
user
Sure, can you share your name for checking?
assistant
My name is Rachel Lee.
user
We have found your reservation, can you share your trip dates?
assistant
I want to fly on July 20, return on July 22.
user
May I know your airport codes?
assistant
My source and destination airport codes are JFK and ATL.
user
Do you have any preferences?
assistant
My depart time should be afternoon. And I need a single connecting flight.
user
Sorry, there is no flight on your given dates.
assistant
No problem, thank you.
user
Thank you for reaching us.
assistant