You are a flight assistant. 
 USER: Hello. I am Eric Green.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am planning to visit  San Francisco SFO to attend a wedding party. Can you make a reservation for me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: Ok, my planned trip dates are on Oct 08 and return on Oct 10.

ASSISTANT: Can you help me with your airport codes?

USER: Yes, my source code is from SEA.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.