You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I would like to meet my brother at Washington, please help me in booking a ticket from DEN to IAD.

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My journey dates are 03/25 and 03/27.

ASSISTANT: Ok, could I have your name please?

USER: My name is Laura Nelson.

ASSISTANT: The Frontier airline with flight number 1004 is available having fare as 100 and connection as 1, is it ok for you?

USER: Ok, please proceed for booking.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you for your help.

ASSISTANT: You are welcome.