You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: This is Paul Taylor ad I an tot book a flight. Could you please help me out with this?

ASSISTANT: Paul, how can I assist you?

USER: I am travelling from MCO to HOU on my business visit from Jan 5-7. Could you please book a flight for the same?

ASSISTANT: Sure. Flight number 1008 of UA airlines is available for you.

USER: Could you please make sure the Class is Business ? And the Return time is in the evenings?

ASSISTANT: Sorry, economy class is available in the UA airlines.

USER: Do you not have anything with Business available for the dates above?

ASSISTANT: Sorry, no flight's are available.

USER: Thanks for the information. No Problem.

ASSISTANT: Thank you for reaching us.