You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I want to travel from DFW to SEA. Can you help me to book a flight ticket?

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

USER: I want to fly in the flight on Sept 21 and Sept 23.

ASSISTANT: Can I know your name please?

USER: Elizabeth Parker.

ASSISTANT: Do you need any specifications?

USER: I want to travel in a connecting flight.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: Proceed to booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1021.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.