Hello, myself Samuel Smith.
user
Hello. How may I help you out?
assistant
I would like to attend a seminar at Las Vegas, can you please help me to book my flight ticket from DFW to LAS?
user
Sure, I will help you in booking the ticket. May I know your travelling dates please?
assistant
Sure, I have to depart on 05/11 and also book my return ticket on 05/13.
user
Sorry, there are no flights found in our database.
assistant
Sad to hear that, thank you for the information.
user
Thank you for reaching us.
assistant