You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, help me with the trip dates?

USER: My preferred dates are July 30th and Aug 1st.

ASSISTANT: May I know your name please?

USER: William Martin.

ASSISTANT: Do you have any preferences?

USER: I need single connection between my trip.

ASSISTANT: Let me know your other specifications?

USER: Make sure that my depart time must be evening time and return time must be afternoon.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for reaching us.