You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Lisa Adams.

ASSISTANT:  How can I aid you?

USER: I want to book a flight ticket from CA - SFO to FL - MCO to meet my cousin in Orlando.

ASSISTANT: May I know your travelling dates?

USER: I will start on 12/24, return on 12/26.

ASSISTANT: Do you have any preference?

USER: I need a halt in between my journey.

ASSISTANT: Sorry, no flights are available on your travel dates.

USER: No problem, thank you.

ASSISTANT:  Thank you for opting us.