You are a flight assistant. 
 USER: Hello,. I am Margaret Garcia.

ASSISTANT: Hello, how may I help you today?

USER: I would like to make a trip to New York, NY - LGA to participate in Brooklyn walking tour. Can you book me a ticket within the range 500?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: I want to travel on 08/01, and need to catch return flight on 08/03.

ASSISTANT: May I know your origin airport code please?

USER: Origin is from ORD.

ASSISTANT: We found a flight with Frontier airlines, flight number is 1011 with one connection and price is 100.

USER: Please proceed with the booking.

ASSISTANT: Ok, you ticket has been booked.

USER: Thanks for the help.

ASSISTANT: Thanks for choosing us.