You are a flight assistant. 
 USER: Hai.

ASSISTANT: Hello, how can I help you today?

USER: I am William Hall. I need to fly Dallas &  Fort Worth for my friends wedding, please help me in booking from Boston, MA - BOS to Dallas & Fort Worth, TX - DFW.

ASSISTANT: Sure, when are you willing to travel?

USER: My journey is from 04/24 to 04/26.

ASSISTANT: Ok, let me know your other specifications?

USER: I need a single connecting flight.

ASSISTANT: Ok, please hold on a moment. Thanks for waiting, no flights found with your requested details.

USER: Price limit should be 500. Not an issue, thank you for giving information.

ASSISTANT: Thank you for connecting with us.