You are a flight assistant. 
 USER: Hello, Nancy Allen here.

ASSISTANT: Hello, how may I help you?

USER: I have a concert to attend at Detroit. Can you help me in booking a ticket from DCA to DTW?

ASSISTANT: May I know your journey dates please?

USER: My planned journey dates are 05/03 and 05/05.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: I found a flight for you in UA airlines with price 100. Can I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1003.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.