Hello.
user
Hello.
assistant
I am Karen Lewis.
user
How can I aid you?
assistant
Due to my health problem I want to change my reservation, can you please help me to change my reservation?
user
Sure, please wait for a while.
assistant
Thank you, I will wait for your reply.
user
I found an active reservation under your name, may I know airport codes?
assistant
My airport codes are OAK to DFW.
user
Please provide me your travel dates.
assistant
I would like to travel on 06/02 and return back on 06/04.
user
Sorry Lewis, there are no flights available for your desired dates.
assistant
That's fine, thank you for your service.
user
Thank you for reaching us.
assistant