You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me in booking my ticket from IAD to LAS?

ASSISTANT: Sure, may I know your name please?

USER: Myself Richard Allen.

ASSISTANT: May I know on which dates you are willing to travel?

USER: My travelling dates are from 07/13 to 07/15.

ASSISTANT: May I know your airline preference please?

USER: There is no specific airline preference for me.

ASSISTANT: May I know your connection limit please?

USER: I need a single connecting flight.

ASSISTANT: May I know your preferable time for journey?

USER: There is no preferable time to travel.

ASSISTANT: There is a connecting flight of fare 100 with economy class in Southwest airline, shall I proceed for booking?

USER: Please proceed for the booking.

ASSISTANT: Your reservation has been confirmed with flight number 1015.

USER: Thank you for your help.

ASSISTANT: You are welcome.Thank you for reaching us.