You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to visit BOS to meet my friend, can you please help me to book a flight ticket from DTW?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are July 30 and Aug 01.

ASSISTANT: Do you have any limits on number of connections?

USER: I am fine with any connection.

ASSISTANT: Do you want any another specifications on your journey?

USER: My depart time is evening.

ASSISTANT: Sure,may I know your name for the documentation purpose.

USER: My name is Emily Jones.

ASSISTANT: Do you want any another specifications?

USER: No.

ASSISTANT:  Unfortunately, no flights available on your requirements.

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