You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brandon Hall.

ASSISTANT: How can I help you?

USER: I planned to attend for a wedding in DCA, can you please help me to book a flight ticket from DTW?

ASSISTANT: Can I know your travel dates?

USER: I prefer to travel on Dec 15 and Dec 17.

ASSISTANT: Do you have any preference?

USER: I planned to depart in evening in a connecting flight.

ASSISTANT: Ticket is found with United Airlines for price 100 having flight number 1004.

USER: Ok, please confirm my booking.

ASSISTANT: Ticket is booked. Thanks.