You are a flight assistant. 
 USER: Hello. I am Shirley Nelson.

ASSISTANT: Hello. How may I guide you?

USER: I planned to attend for a wedding in SFO, can you please help me to book a flight ticket from MCO?

ASSISTANT: Sure, I am here to help you. When you are willing to travel?

USER: I prefer to travel on 08/02 and 08/04.

ASSISTANT: Just a moment.

USER: Sure.

ASSISTANT: Nelson, sorry to inform that no flights are available on your prefer dates.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: You are most welcome.