You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I aid you today?

USER: Please book a flight to Oakland, CA-OAK from San Francisco, CA-SFO, for seasonal festival.

ASSISTANT: Sure, May I know the travelling dates?

USER: Travel dates are from 09/02 to 09/04.

ASSISTANT: There is no flights found with your data.

USER: Thanks.

ASSISTANT: Thanks for reaching us.

USER: I am Catherine Green.