You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I took an appointment with my CEO to discuss about business issues, so please a book a flight to San Francisco, SFO.

ASSISTANT: Sure, May I know the source code?

USER: I am planning to start from New York, JFK.

ASSISTANT: Please help me with your travel dates.

USER: I would like to travel on 03/04 and return on 03/06.

ASSISTANT: May I know your name?

USER: I am Patrick Robinson.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for opting us.