You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I be your helping hand?

USER: I am Matthew Rodriguez. 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 200?

ASSISTANT: Sure, may I know your boarding point?

USER: It is a round trip.

ASSISTANT: Ok, could you provide your travelling dates?

USER: I want to travel on 07/19, and need to catch return flight on 07/21.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: WE found a flight on frontier airline, flight number as 1019 with the fare of 100. Shall I proceed?

USER: Proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for the help.

ASSISTANT: Thank you for opting us.