You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Ronald Nelson, can you help me in booking my flight ticket to CLT from OAK?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Thank you for considering my request. My travelling dates are Feb 8 and Feb 10.

ASSISTANT: Can I know your preferences?

USER: I need a connecting flight which return to my location in the evening.

ASSISTANT: Do you need any other specifications?

USER: I need a flight with an economy class in normal-cost airlines.

ASSISTANT: Sorry, there are no flights found.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.