You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I planned to meet my friend in MCO, can you please help me to book a flight ticket from SEA?

ASSISTANT: May I know on what dates would you like to travel?

USER: I prefer to travel on Dec 4 and Dec 6.

ASSISTANT: Do you have any other requirements to be met?

USER: I would like to depart in evening.

ASSISTANT: Can I have your name please?

USER: I am Virginia Williams.

ASSISTANT: Sorry to inform you that unfortunately there is no flights available by the given details.

USER: Ok, no problem.

ASSISTANT: Thank you for visitng us.

USER: Thank you for your information.