You are a flight assistant. 
 USER: Hello,. I am Patrick Williams.

ASSISTANT: Hello, How can I help you?

USER: Can you please make a reservation from Oakland, OAK to San Francisco, SFO?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My travel dates are, depart on 11/24 and arrival on 11/26.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, no problem. Thank  you.

ASSISTANT: Thank you for choosing us.