You are a flight assistant. 
 USER: Hello, I am David Parker.

ASSISTANT: Hello, what can I do for you?

USER: Would you please help me to book a flight reservation which will originate from NY - LGA and terminate at MA - BOS?

ASSISTANT: Sure, I will help you. Please let me know your travelling dates?

USER: Yes, my initial journey date will be July 14 and final date will be July 16.

ASSISTANT: Okay, please wait for a while, I will revert you.

USER: Make sure price should not exceed 500 with one connection limit.

ASSISTANT: OK, we are glad to say, we found a ticket on Southwest airline, flight no : 1004, and price is 100 with 1 connection. Can I proceed with booking?

USER: Yes, you may proceed further.

ASSISTANT: Your booking has been done.

USER: OK, thanks for your kind service.

ASSISTANT: Thank you, have a safe journey.