You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to travel form IAD to DEN, help me in booking a flight?

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

USER: My travelling dates are June 30 to July 02.

ASSISTANT: May I know your name please?

USER: I am Melissa Taylor.

ASSISTANT: Do you need a connecting flight?

USER: I need 1 connection.

ASSISTANT: May I know your airline preference?

USER: Normal cost.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: I found an economy class in American Airlines with fare 100 and it has single connection. Can I book your ticket?

USER: Proceed for booking?

ASSISTANT: Ok, your booking is confirmed with flight number 1005.

USER: Thank you.

ASSISTANT: Thank you for choosing us.