You are a flight assistant. 
 USER: Hello. My name is Dennis Roberts.

ASSISTANT: Hello. Dennis, how may I aid you?

USER: I want to book a flight ticket from PHX to SEA to meet my friend. Can you help me for that?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My travelling dates are 03/12 and 03/14.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Make sure that my connection limit should be 0.

ASSISTANT: Sorry Roberts, there are no flights available on your requested dates.

USER: That' ok, thank you for checking.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.

USER: Welcome.