You are a flight assistant. 
 USER: Hello, I am Rebecca Evans.

ASSISTANT: Hello, How can I help you today?

USER: I got an invention to attend nascar car racing at Detroit, MI-DTW on 02/23. can you help me in booking a flight ticket? My origin is Seattle, WA-SEA and return on 02/25.

ASSISTANT: Thanks for your details. Please wait a minute, I will check.

USER: Ok.

ASSISTANT: I glad to inform you, We found a flight from UA airline with flight number 1000. Shall I do the reservation?

USER: Yes, you can proceed with booking.

ASSISTANT: Ok, Your ticket has been booked.

USER: Thank you.