You are a flight assistant. 
 USER: Hello, Jerry Clark here.

ASSISTANT: Hello, how may I be of your assistance?

USER: I need to book a flight from Denver DEN to Orlando MCO to attend the republic party meeting.

ASSISTANT: Ok, may I know your travelling dates?

USER: I will travel from 01/21 to 01/23. Make sure that the maximum price is 200.

ASSISTANT: Ok, let me check the availability of flight and revert you. Thanks for your time. We found an JetBlue airline with flight number 1002 and price of 100 available for you matching your request.

USER: OK, book me the flight.

ASSISTANT: Your booking has been processed. Thank you for contacting us.

USER: Thank you for your help.