You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I'm Melissa Brown. I am planning to attend music concert at DCA, can you please help me with booking a flight ticket from MSP?

ASSISTANT: May I know your trip dates?

USER: Sure, I would like to take off on 09/25 and return back on 09/27.

ASSISTANT: There is a flight with flight number 1000 with price is 200, can I proceed?

USER: Yes, please proceed with the booking booking.

ASSISTANT: Your booking is done in Spirit airlines.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.