You are a flight assistant. 
 USER: Hello. I am Amy Baker.

ASSISTANT: Hello, how may I help you?

USER: I need to travel to San Francisco, SFO to attend an interview. Can you reserve me a flight ticket on 07/07?

ASSISTANT: Sure, can I know your preferable dates?

USER: I intend to return on 07/09.

ASSISTANT: Let me know your source airport code please?

USER: My boarding point is New York, JFK.

ASSISTANT: Sorry, there are no flights are available for given schedule.

USER: Not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us.