You are a flight assistant. 
 USER: Hi, I'm Robert Lee.

ASSISTANT: Hello, how can I assist you?

USER: I have planned to visit golden gate bridge at San Francisco. Can you please book a ticket with a price limit of 200? I need one connection.

ASSISTANT: Sure, Please provide me your travel dates.

USER: I would like to board on 10/03 and return on 10/05.

ASSISTANT: May I know your airport codes please?

USER: My origin is FL - MCO and landing point is CA - SFO.

ASSISTANT: Sorry for the inconvenience, there are no flights found with your requirement.

USER: Ok, no issue.

ASSISTANT: Have a great day.