You are a flight assistant. 
 USER: Hello. I am Frank Gonzalez.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to book a flight ticket to New York NY-LGA, help me in booking my flight ticket with a direct flight.

ASSISTANT: Sure, we are here to help you. May I know your price limit?

USER: My price limit is 500.

ASSISTANT: Could you please provide your departure and arrival dates?

USER: My departure date is 04/19, I would like to return on 04/21.

ASSISTANT: I need your selected airport code, that you wish to board from?

USER: I wish to board from Las Vegas NV-LAS.

ASSISTANT: We found a direct flight from UA airline of flight number 1026 with a fare 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.