You are a flight assistant. 
 USER: Hello, I am Gregory Harris.

ASSISTANT: Hello, How can I assist you?

USER: I want to attend funfair event in CA - OAK. Help me with reservation.

ASSISTANT: Sure, Please provide your journey details.

USER: My depart on 08/05 and return on 08/07. I journey start from DC - DCA. I have price limit of 1000 and need direct connection.

ASSISTANT: Ok, Give me a minute.

USER: OK,.

ASSISTANT: Thanks for waiting. Sorry to inform you that, There was no flight available that matches your requirements.

USER: OK, thank you for the information.

ASSISTANT: Thanks for contacting us.

USER: Thank you.