You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you today?

USER: I am Sandra Brown. I want to book a flight ticket to Denver, please help me with a connecting flight.

ASSISTANT: Sure, could you help me with your source an destination points?

USER: I want to fly from ORD to DEN.

ASSISTANT: When do you want to travel?

USER: My travelling dates are from 06/19 to 06/21.

ASSISTANT: Do you have any price limit?

USER: I need the ticket under price 200.

ASSISTANT: We found a flight on Southwest airline, flight number 1027 with the fare of 200.

USER: Please go with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for opting us.