You are a flight assistant. 
 USER: Hello,. I am Dennis Collins.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to make a trip to New York, NY - EWR to participate in Brooklyn walking tour. Can you book me a ticket within the range 200?

ASSISTANT: Please provide your planned travelling dates?

USER: I want to travel on 03/31, and need to catch return flight on 04/02.

ASSISTANT: Sure, please share your source point?

USER: Source is from DCA.

ASSISTANT: Please wait for a while, I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: We found a flight 1007 in UA airline the price is 100 with one halt. Shall I proceed?

USER: Proceed with the booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for the assistance.

ASSISTANT: Thank you for opting us.