You are a flight assistant. 
 USER: Hello. Eric Adams here.

ASSISTANT: Hello. How can I assist you at  this moment?

USER: I would like to visit DTW to meet my sister, can you help me to book a flight ticket from IAD?

ASSISTANT: Sure Eric, I will help you with that. Can I have your travel dates please?

USER: I would like to take off on 11/01 and return on 11/03.

ASSISTANT: Ok Eric, please wait  a moment.

USER: Sure, take your own time.

ASSISTANT: Spirit airlines running a flight in your route with connection 1 and the ticket fare is 200. Is it ok for you?

USER: That's perfect, proceed with that booking.

ASSISTANT: Ok Eric, your ticket booking has done and the flight number is 1025.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us, have a great journey.