You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Brian Clark, want to travel from MCO to LAX. Please help me in booking my ticket.

ASSISTANT: May I know your desired travel dates please?

USER: My travelling dates are from 01/08 to 01/10.

ASSISTANT: Do you have any specifications?

USER: My return time should be in evening with 1 connection.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: I am looking for business class.

ASSISTANT: Sorry to say, there is no flight available.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for opting us.