You are a flight assistant. 
 USER: Hello. I am Kathleen Miller.

ASSISTANT: Hello, how may I serve you today?

USER: I am planning to go for an occasion in PHX, can you please help me to book a flight ticket from OAK with price 500? And I need a direct flight.

ASSISTANT: Ok, please provide your origin airport code.

USER: Ok. I already mentioned above.

ASSISTANT: Ok, When are you planning to travel?

USER: I would like to fly from 09/30 to 10/02.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry we do not have direct flight.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thanks for choosing us.