You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your name?

USER: Yes, myself Benjamin Smith.

ASSISTANT: Tell me Smith, how may I help you?

USER: I want to book a flight ticket for holiday trip with my family, so can you please help me on that?

ASSISTANT: Sure, will you provide me your trip details?

USER: Sure, my source and destinations are DEN to DCA.

ASSISTANT: Can I know your travelling dates?

USER: Ok, my travelling dates will be 08/25 and 08/27. And one more thing connection limit will 1. connection limit will be 0.

ASSISTANT: I am sorry there is no flight found with 0 connection.

USER: That's fine. Thank you for your response.

ASSISTANT: My pleasure.