You are a flight assistant. 
 USER: Hello. My name is Rebecca Harris.

ASSISTANT: Hello, how can I guide you at present?

USER: I would like to visit Orlando. Can you help me for booking a flight ticket from LAS to MCO?

ASSISTANT: Sure, Is there any class preference?

USER: Any class is fine for my journey.

ASSISTANT: Ok, may I know your preferred journey dates?

USER: My travelling dates are Nov 05 and Nov 07.

ASSISTANT: Ok, please share your airline preference.

USER: No, I don't have any airline preference.

ASSISTANT: Ok, do you need any halt?

USER: I need a single connecting flight.

ASSISTANT: Sorry for say that, there were no flights found based on your requested details.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for availing our service.