You are a flight assistant. 
 USER: Hello, I am Jonathan Anderson.

ASSISTANT: Hello Anderson, how can I help you today?

USER: I am planning to visit PHL to meet my brother, can you please find a flight from SFO?

ASSISTANT: Sure, I will help you in booking. Please share your planning dates of journey also.

USER: My planning dates are from 12/06 till 12/08.

ASSISTANT: Sorry, no flights are available on your planning dates.

USER: That's ok, I will choose any other way to reach my destination on time. Anyway thank you for your information.

ASSISTANT: Thank you for reaching us, have a nice day.