You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Myself Richard Phillips. I am looking for a flight from IAD to LAS, can you help me in booking the flight ticket?

ASSISTANT: Sure, I will help you, May I know your travelling dates?

USER: Sure, my planned travel dates are Jan 20 and Jan 22.

ASSISTANT: Do you have any connection limit?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: Yes, I would like to start my journey for the morning flight and for my return journey I am conformable with any session.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: You have a flight 1024 in Southwest airline and price 200 with a connection Shall I proceed with economy class?

USER: That's fine, please proceed in booking.

ASSISTANT: Your booking is done and departure time is  9:00AM.

USER: Thank you.

ASSISTANT: Thank you.