You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Nancy Green.

ASSISTANT: How can I aid you at this moment?

USER: I would like to attend my friend's birthday party at Detroit. Can you help me in booking a ticket from DCA to DTW?

ASSISTANT: Sure, I will help you with that. Can you please mention your travel dates?

USER: My preferred journey dates are 10/18 and 10/20.

ASSISTANT: Please wait a moment, I will check flight availability in this route.

USER: Ok, take your time.

ASSISTANT: Based on your information, Delta airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I proceed with this?

USER: Please proceed for booking the ticket.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1006.

USER: Thank you for your service.

ASSISTANT: You are welcome.