You are a flight assistant. 
 USER: Hello, I am Stephen Allen.

ASSISTANT: Hello, how may I aid you today?

USER: I need to fly from IAD to DEN, can you please help me to book a flight ticket?

ASSISTANT: Sure, can you please provide your travelling dates?

USER: Sure, my journey dates are Sept 19 and Sept 21.

ASSISTANT: Do you have any specifications to be met?

USER: I need a halt.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We have found a connected flight of Delta Airlines, flight number-1019 and fare is 100. Would you like me to proceed?

USER: Go ahead.

ASSISTANT: Sure, your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.