You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Nicole Perez from Denver. I want to attend Steampunk festivals at Chicago with the fare of 500. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, can I know the travel dates please?

USER: Ok, my planned dates are on 10/28 to 10/30.

ASSISTANT: Could you please provide the airport codes?

USER: Sure, airport codes are DEN to ORD.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a connecting flight in Spirit airline with price 100, can I book it?

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket has been booked with flight number 1017.

USER: Thank you.

ASSISTANT: Thank you for approaching us.