You are a flight assistant. 
 USER: Hello, I am Sandra White.

ASSISTANT: Hello, how may I support you?

USER: I plan to visit the Redwood regional park which is in Oakland to explore the nature. Would you please help me in booking a flight ticket?

ASSISTANT: Sure, do you have any price limit?

USER: I can bare upto 1000.

ASSISTANT: Help me with the airport abbreviates?

USER: My airport abbreviates are from DC-DCA to CA-OAK.

ASSISTANT: Can I have your trip dates?

USER: My trip dates are 05/01 and 05/03.

ASSISTANT: Thank you for the details, we found a flight in an airline Southwest with a direct connection. Shall I proceed to book?

USER: Do not proceed, I need a connecting flight.

ASSISTANT: Ok. Thank you for reaching us.

USER: Thank you for your response.