You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I have planned to book a plane ticket from BOS to DFW, can you assist me?

ASSISTANT: May I know your preferred dates?

USER: My preferred dates are May 30th and June 1st.

ASSISTANT: May I know your name to proceed further?

USER: Helen Roberts.

ASSISTANT: Do you need any connections between your trip?

USER: I need single connection between my trip.

ASSISTANT: Do you need any other requirements?

USER: No.

ASSISTANT: We regret to inform you that there is no flight going on your way.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for opting us.