You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you at this moment?

USER: I am Brenda Young, I need a flight to Oakland city to visit my brother house at Woodland. Can you help me to book a flight under price of 500?

ASSISTANT: Sure, Kindly mention your airport codes?

USER: I like to fly from Las Vegas NV-LAS to airport CA-OAK.

ASSISTANT: Let me know your connection limit?

USER: Sure, I want a flight with one halt.

ASSISTANT: Can you provide your departure date for booking?

USER: I will depart on 02/28 and return on 03/01.

ASSISTANT: Thanks for the details, Please wait for a minute.

USER: Sure.

ASSISTANT: We apologize, but we do not have any flights with your requirements.

USER: Ok, thanks for helping me.

ASSISTANT: Thanks for approaching us.