You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me in reserving a flight tikcet to LAS from OAK?

ASSISTANT: Sure, when would you like to travel?

USER: My planned travel dates are from Feb 18 to Feb 20.

ASSISTANT: May I know your name please?

USER: I am Patricia Parker.

ASSISTANT: Do you have any specifications to be met?

USER: I need a connecting flight.

ASSISTANT: Sorry, no flights found in your desired routes.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.