You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you at this moment?

USER: I need to book a flight ticket from PHL to MCO, can you please help me for booking?

ASSISTANT: Sure, may I know your travelling dates please?

USER: I would like to travel on 12/10 to return on 12/12.

ASSISTANT: Ok, do you need any stopover in between the journey?

USER: I need a connecting flight.

ASSISTANT: Do you prefer business or economy class?

USER: I need a business class.

ASSISTANT: Can I have your good name please?

USER: Brenda Campbell here.

ASSISTANT: There are no flights found on your requested dates.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.