You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Shirley Green here.

ASSISTANT: How can I help you Shirley.

USER: I want to book a ticket to see the place the Alcatraz Island in San Francisco.

ASSISTANT: May I know your travel dates?

USER: I would like to travel on 12/18 and 12/20.

ASSISTANT: May I know your airport codes?

USER: Ok, my locations are from MCO to SFO. Price will be within 200.

ASSISTANT: Sorry Shirley, there are no flights available on your requested dates.

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

ASSISTANT: You are welcome.