You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a flight from DEN to IAD?

ASSISTANT: When you are willing to travel?

USER: My journey dates are 03/29 and 03/31.

ASSISTANT: Just a moment.

USER: Sure.

ASSISTANT: There is a flight with AA airlines and the ticket figure is 200. Shall I proceed with this?

USER: Proceed with booking.

ASSISTANT: For reserving the ticket. May I know your name please?

USER: My name is Donald Allen.

ASSISTANT: Allen, your ticket is reserved in economy class with the flight-1004.

USER: Thank you.

ASSISTANT: Thank you Allen for reaching us.