You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to attend a Seminar in Chicago. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am happy to help you. Can you please tell me your travel dates?

USER: My travelling dates are June 03 and June 05.

ASSISTANT: What are your desired airport codes?

USER: My airport codes are DFW and ORD.

ASSISTANT: Can you please tell me your connection limit preference?

USER: I prefer single connecting flight.

ASSISTANT: Ok, please tell me your other preferences if any.

USER: I prefer normal cost airline.

ASSISTANT: On which name do you want me to reserve the ticket?

USER: Emma Brown.

ASSISTANT: There is a flight available in the normal-cost that is Delta airlines with the ticket fare of 200. Shall I confirm your ticket?

USER: Please proceed for booking the flight ticket.

ASSISTANT: I have confirmed your ticket with the flight-1015. Have a nice journey.

USER: Thanks for helping me.

ASSISTANT: Thank you for opting us.