You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Roberts Baker. I want to travel from SFO to DEN. Help me in booking a flight?

ASSISTANT: Sure, please tell me your travel dates.

USER: My date of travelling is on 12/25 and I will be back on 12/27.

ASSISTANT: Please give me a moment to check.

USER: Sure.

ASSISTANT: Southwest airline is available with 0 connection. Shall I proceed to book?

USER: No don't proceed for booking. I want to travel in single connection flight.

ASSISTANT: Sory, there are no flights with single connection.

USER: That's ok. thank you for your information.

ASSISTANT: You are most welcome.