You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Stephanie Robinson. Can you help me to book a flight with 200 price limit?

ASSISTANT: Sure, please provide your airport codes.

USER: My airport codes are JFK and DEN.

ASSISTANT: May I know your journey dates please?

USER: My travelling dates are 04/25 and 04/27.

ASSISTANT: I found a flight for you in Frontier airlines with price 100. Can I proceed?

USER: Yes, proceed with booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1004.

USER: Thank you.

ASSISTANT: Thank you for choosing us.