You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Rachel Carter.

ASSISTANT: Carter, how can I assist you?

USER: I am planning to attend music concert at ORD, can you please help me with booking a flight ticket from DCA?

ASSISTANT: Sure, I am here to help. Can you please tell me your travel dates?

USER: Sure, I would like to take off on 01/24 and return back on 01/26.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: There is a flight available with Frontier airlines and the ticket fare is 100 only. Can I book the ticket for you?

USER: Yes, please proceed with the booking.

ASSISTANT: Carter, your ticket is booked and your flight number is 1028.

USER: I appreciate your help, thank you.

ASSISTANT: You are welcome and thank you for choosing us.