You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donald Lee.

ASSISTANT: How may I aid you today?

USER: I want to book a ticket from LAS to DTW to attend seminar, can you help me in booking?

ASSISTANT: Sure Lee, I am here to help you out. Please provide me your trip dates to search the flight.

USER: I am departing on 06/14 and return on 06/16.

ASSISTANT: Here is a flight with 1 stop and price is 100 in 1002 Spirit airlines, can I proceed with it?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.