Hello.
user
Hello, how may I help you?
assistant
I am David Evans. Could you help me in booking a flight ticket from BOS to LAS?
user
Sure, can I know your travelling dates?
assistant
My departure day is Oct 03, return day is Oct 05.
user
Do you have any particular time for departing and returning?
assistant
My depart time should be morning, return time should be evening.
user
Would you like to prefer direct flight or connecting flight?
assistant
I want a flight with one connection.
user
Which class do you prefer?
assistant
I am comfortable with any class.
user
Thank you for giving your valuable time, but there are no flights available based on your request.
assistant
No problem, thank you.
user
Thank you for opting us, we hope to serve you again with better features.
assistant