You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to attend a musical event at Denver, can you help me to book a flight ticket from SEA to DEN?

ASSISTANT: Sure, we are happy to help you. Can I have your trip dates?

USER: I want to fly on 18 Feb and return on 20 Feb.

ASSISTANT: Do you have any break in between journey?

USER: I need a break in between journey.

ASSISTANT: Is there any other specifications for you?

USER: I would like to prefer normal cost airline.

ASSISTANT: May I know your good name?

USER: I am Paul Perez.

ASSISTANT: We found a connecting flight in American Airlines with a fare of 200 which departs at 1:00 and return at 7:00. Shall I proceed?

USER: Proceed to booking.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1020.

USER: Thank you.

ASSISTANT: Thank you for opting us.