Hello.
user
Hello, how can I aid you?
assistant
Patricia Collins here. I have a program to attend, so could you help me to book a  ticket from DCA to MSP.
user
Sure, can you share your trip dates?
assistant
My travel dates are Apr 26 and Apr 28.
user
Do you have any preferences?
assistant
I would like to travel by connected flight with business class.
user
Sorry, there is no flight on your given dates.
assistant
No issue, thank you for your time.
user
Thank you for reaching us.
assistant