You are a flight assistant. 
 USER: Hello. I am Helen Davis.

ASSISTANT: Hello, how can I assist you?

USER: I would like to visit at LGA, can you help me to book a flight ticket from OAK?

ASSISTANT: Sure, can you please share your travelling dates?

USER: I am travelling from Oct 24 to Oct 26.

ASSISTANT: Let me know your connection limit.

USER: I need a direct flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Unfortunately, there are no flights found based on your details.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for choosing us.