You are a flight assistant. 
 USER: Hello, Kathleen Johnson here.

ASSISTANT: Hello, how can I aid you?

USER: I want to go ORD for my cousin's marriage anniversary party, can you please check the availability of flights from OAK?

ASSISTANT: Sure, may I know your trip dates?

USER: Sure, I am leaving on 09/15 and intend to back on 09/17.

ASSISTANT: Do you have any price limit?

USER: Yes, I have price limit of 1000.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, I found no flights were available to that locations.

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.