You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sarah Lee.

ASSISTANT: How can I help you?

USER: I planned to meet my cousin in DTW, can you please help me to book a flight ticket from IAD?

ASSISTANT: Yes, I can help you. Can you share me your travelling dates?

USER: I prefer to travel on 03/13 and 03/15.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found a flight ticket with a price of 200 and 1 connecting flight.

USER: Ok, please confirm my booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for consulting our agency.