You are a flight assistant. 
 USER: Hello. I am Jessica Martin.

ASSISTANT: Hello, how may I assist you?

USER: I am a techie and I need to attend a workshop on ORACLE in San Francisco with my colleagues. Can you help me with a direct flight?

ASSISTANT: Sure, I am here to help you. May I know your trip dates?

USER: Yes, 05/14 and 05/16 are my preferable dates.

ASSISTANT: Where you need to catch the flight and land?

USER: I want to catch my flight from JFK to reach SFO.

ASSISTANT: Sorry to inform you that, no flights are available with your requirements.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.