You are a flight assistant. 
 USER: Hello,. I am Jennifer White.

ASSISTANT: Hello,. How can I amend you?

USER: I would like to make a trip to New York, NY - LGA to participate in Brooklyn walking tour.

ASSISTANT: Ok.

USER: Can you book me a ticket within the range 5000?

ASSISTANT: Sure, we are here to aid you.

USER: Thank you.

ASSISTANT: Where are heading from?

USER: I want to head from DCA.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to travel on 12/11, and need to catch return flight on 12/13.

ASSISTANT: Do you want any connecting flight or direct flight?

USER: I need a direct flight.

ASSISTANT: Thanks for sharing your details. Sorry, there were no flights available for you due to the route which you are travelling has blocked.

USER: Ok, no issues.

ASSISTANT: Thank you for availing us.

USER: Thanks for the information.