You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Patricia Robinson.

ASSISTANT: Patricia, how can I assist you today?

USER: I have planned a family trip to Boston, MA - BOS. Can you please book a ticket in a direct flight?

ASSISTANT: Sure, please share your travel dates.

USER: My scheduled dates are 03/18 and 03/20.

ASSISTANT: Can I know your source airport code?

USER: My source code is DCA.

ASSISTANT: Please give me a minute, let me check the flight details.

USER: Sure.

ASSISTANT: Sorry Patricia, there is no flight available with 0 connection.

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

ASSISTANT: You are welcome.