You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Patrick Parker here.

ASSISTANT: How can I help you today?

USER: Can you please help me out in ticket booking from DCA on 10/12.

ASSISTANT: Ok, may I know your destination code?

USER: My return date will be 10/14 from Washington and Washington's airport code is DCA.

ASSISTANT: I found UA airline with 0 connection as per your details. Can I proceed to booking?

USER: I want 1 connection.

ASSISTANT: Sorry, no flights with connection 1. Anything else to help you.

USER: No. Thank you.