You are a flight assistant. 
 USER: Hello. I am David Harris.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Ok, may I know the travel dates to book?

USER: I prefer to travel on 09/24 and 09/26.

ASSISTANT: Sorry, there is no flight available at your location to book for you. Thank you for choosing our agency.

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