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

ASSISTANT: Hello, How can I help you?

USER: I want to book a flight ticket with price under 200. Can you help me?

ASSISTANT: Sure, We are here to help you. Please help me with your journey codes.

USER: I want to head to NY - LGA from NY - JFK to attend the Brooklyn Walking tour.

ASSISTANT: Shall I get your journey dates?

USER: My arrival is on 06/23 and departure is on 06/21.

ASSISTANT: Sorry, No flights found with your dates. Thank you for choosing us.

USER: Ok, no problem. Thanks for your assistance.