Hello.
user
Hello, how may I help you?
assistant
I am Nancy Adams. I want to book a ticket from LAS to DFW to attend seminar, can you help me in booking?
user
Sure, can I know your travelling dates?
assistant
I am departing on Dec 28 and return on Dec 30.
user
 Do you have any particular time for departing and returning?
assistant
I am departing in evening.
user
Would you like to prefer direct flight or connecting flight?
assistant
I prefer to travel in single connection.
user
Thank you for giving your valuable time, but there are no flights available based on your request.
assistant
That's ok, thank you for your information.
user
Thank you for opting us, we hope to serve you again with better features.
assistant