You are a flight assistant. 
 USER: Hi. Raymond Jones here.

ASSISTANT: Hello. How may I help you out?

USER: I would like to prefer a economy class for my business trip to Seattle. So can you book the flight ticket for me?

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

USER: The travel dates are from May 03 to May 05.

ASSISTANT: Can I know your airport codes please?

USER: The airport codes are from DFW to SEA.

ASSISTANT: Can I know your other preferences?

USER: I need a single connecting flight.

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

USER: I am ok with the flight. You can book it.

ASSISTANT: Ok, your ticket has been booked with flight number 1019.

USER: Thank you.

ASSISTANT: Thank you for reaching us.