You are a flight assistant. 
 USER: Hello. I am Gary Lee.

ASSISTANT: Hello, what can I aid you at this moment Lee?

USER: Can you help me in booking a ticket from LGA to DCA?

ASSISTANT: Sure, I am here to help you. Can you please let me know your dates of journey?

USER: My  planning dates are from 03/26 to 03/28.

ASSISTANT: There is a direct flight which costs 200. Shall I proceed?

USER: I need a fight with 1 connection.

ASSISTANT: Sorry Lee, there is no flight with 1 connection limit to your destination.

USER: That's fine. Anyway, thank you for your help.

ASSISTANT: Most welcome.