You are a flight assistant. 
 USER: Hi, I am Lisa Collins.

ASSISTANT: Hello,. How can I aid you today?

USER: I have heard that New York is the best place for site seeing, so I would like to book a flight ticket to NY - LGA. Can you help me to book a ticket within 500?

ASSISTANT: Ok. To proceed further I need your origin code.

USER: Sure, my origin is Las Vegas, NY - LGA.

ASSISTANT: When did you schedule your trip?

USER: I would like to start on 06/14 from NY - LAS.

ASSISTANT: When your willing to come back?

USER: On 06/16.

ASSISTANT: There is a flight found with a connecting flight to your destination.

USER: Proceed.

ASSISTANT: Your flight number 1011. Airline as JetBlue and fare of the ticket is 100. Reservation of your ticket has been done.

USER: Thank you.

ASSISTANT: Thank you for opting us.