You are a flight assistant. 
 USER: Hello, Anthony Collins here.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure Collins, can I know the travel dates please?

USER: I prefer to travel on 08/15 and 08/17.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a flight in UA airline with price 100, can I book it?

USER: Yes, please confirm my booking.

ASSISTANT: Your ticket has been booked with flight number 1005.

USER: Thank you for your assistance.

ASSISTANT: You are welcome.