You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I'm Paul Davis.

ASSISTANT: How can I help you?

USER: I want to reserve my ticket within the connections limit 1, can you please help me to book a ticket from LAS to DCA?

ASSISTANT: Sure, I will help you to book a flight. Can you please provide me your travelling dates?

USER: Sure, my itinerary dates are 01/06 and 01/08.

ASSISTANT: Give me a moment. There is one flight is available for you with 0 connection. Shall I proceed for booking?

USER: I need 1 connection flight.

ASSISTANT: Sorry, there is no flight is available for you with single connection.

USER: No problem, thank you for checking.

ASSISTANT: Welcome. Thank you for choosing us.