You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I provide assistance to you?

USER: Can you aid me to book a flight ticket from DCA to ORD?

ASSISTANT: Sure, to book a ticket can I have your travelling dates?

USER: I want to take off on 28 Feb and return on 01 Mar.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Please provide your requirements.

USER: I would like to travel in normal cost airline.

ASSISTANT: May I know your name please for documentation?

USER: I am Jason Taylor.

ASSISTANT: United airlines flight 1020 with connection in economy class matches your given details. Would you like to proceed?

USER: Please proceed.

ASSISTANT: Ok, your ticket has been processed.

USER: Thanks for helping me.

ASSISTANT: Thank you for opting us.