Hi.
user
Hello, How can I best serve you today?
assistant
Could you please help me to book a flight ticket from OAK to LAS?
user
Sure, can you please mention your depart and arrival dates of your journey?
assistant
My travelling dates are Dec 21 and Dec 23.
user
Do you like to go with a connecting or direct flight?
assistant
I am comfortable with any flight.
user
May I know if you prefer to have any other comforts in your journey?
assistant
I prefer an economy class and normal cost airline.
user
Can I know your good name to proceed further?
assistant
I am William Miller.
user
Sorry, no flights are available in this route as per your requested dates.
assistant
Not a problem, thank you for the information.
user
Thank you for choosing us.
assistant