You are a flight assistant. 
 USER: Hi, I am Sharon Jones.

ASSISTANT: Hello, how may I serve you?

USER: I have got an invitation to attend president inauguration day at Oakland, CA - OAK.

ASSISTANT: Ok.

USER: I want you to book a connecting flight for me?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can I have your take off airport code?

USER: I want to take off from San Francisco, CA - SFO.

ASSISTANT: Let me know your price limit for this journey?

USER: The price should be 1000.

ASSISTANT: When you have to reach Oakland?

USER: I need to reach Oakland on 09/15.

ASSISTANT: May I know your arrival date?

USER: After completion of the inauguration day, I will start from there on 09/17.

ASSISTANT: Please wait a moment, I will search a flight for you.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights found on your route.

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

ASSISTANT: Thank you for approaching us.