You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me in doing a reservation from LAS to IAD?

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

USER: My journey dates are Nov 17 to 19.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight with normal-cost.

ASSISTANT: Please help me with your name for booking.

USER: I am Helen Parker.

ASSISTANT: According to your information, I have found a direct flight in your journey with a minimum fare of 700 with flight number 1002. Shall I proceed with this flight?

USER: Ok, please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Most welcome.