You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Rachel Williams.

ASSISTANT: How may I aid you today?

USER: I want to book a ticket from DTW to ATL, to attend a seminar in my head office.

ASSISTANT: Ok, I'll help you in that. May I know your preferable travel dates please?

USER: Ok, my trip starts at 08/21 and returning on 08/23.

ASSISTANT: Spirit airlines is having a flight on that route with travel charge of 200, shall I proceed for booking?

USER: Yes, you can proceed.

ASSISTANT: I have successfully booked your ticket with flight-1019, have a safe journey.

USER: Thank you so much.

ASSISTANT: Thank you for choosing us.