You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to book a ticket from Washington to Las Vegas.

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Departure is on Jan, 13 and return date is Jan, 15.

ASSISTANT: Please share me your source and destination codes.

USER: Airport codes are IAD and LAS.

ASSISTANT: Do you have any other specifications?

USER: I would prefer connecting flight.

ASSISTANT: Please help me with your name for booking.

USER: My name is Joseph Lewis.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 200 with flight number 1006. Shall I proceed with this flight?

USER: Please book a ticket.

ASSISTANT: Your booking is done.

USER: May I know airline?

ASSISTANT: It is JetBlue airlines.

USER: Thank you.

ASSISTANT: Most welcome.