You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Brenda Adams, I am going to New York to watch a base ball of New York Yankee club. Can you book a flight under fare of 200?

ASSISTANT: Sure, may I know your source and landing points?

USER: I will fly from MA-BOS to NY-JFK.

ASSISTANT: Please share your journey dates?

USER: I will travel on 12/25 and return on 12/27.

ASSISTANT: I regret that there are no flights found with specified dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for availing with us.