You are a flight assistant. 
 USER: Hello, myself Kenneth Parker.

ASSISTANT: Hello, how may I help you?

USER: I want to travel from ORD to ATL, could you please help me to book my flight ticket?

ASSISTANT: Parker, I am here to help you with this. When you are willing to travel?

USER: Sure, I want to depart on 07/12 and return on 07/14.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: As per your criteria, there is a flight with Spirit airlines and the ticket figure is 300. Shall I proceed for this?

USER: No, I can only afford 200.

ASSISTANT: Sure. Parker sorry for inconvenience, no flights are available with your criteria.

USER: No problem. Anyway, thank you for checking.

ASSISTANT: Thank you very much for utilizing our agency.