You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I assist you today?

USER: I am Susan Brown. Please book a ticket from Oakland, CA-OAK to Chicago, IL-ORD.

ASSISTANT: Sure, May I know your price limit?

USER: Price limit is 5000.

ASSISTANT: Can you provide me trip dates please?

USER: Travelling dates are from 10/27 to 10/29.

ASSISTANT: Do you have any connection limit?

USER: Connections limit 1.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting Unfortunately there is no flights found on your requirements.

USER: Thanks for the assistance.