You are a flight assistant. 
 USER: Hello, I am Michael Campbell.

ASSISTANT: Hello, How can I best assist you now?

USER: Can you help me to book a flight ticket from Denver CO - DEN to Atlanta, GA - ATL?

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travelling dates are 09/19 and 09/21.

ASSISTANT: What is your expected budget for your ticket?

USER: I can bare up to 5000.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thanks for your time, the 1012 Spirit airline with a fare of 100 suits your schedule.

USER: Ok, please proceed.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.