You are a flight assistant. 
 USER: Hi. This is James Jackson.

ASSISTANT: Hello, how may I aid you today?

USER: I have a plan to visit Philadelphia. Can you help me in booking flight ticket from OAK to PHL?

ASSISTANT: Sure, I am here to help you?

USER: Thank you.

ASSISTANT: Can you provide your travel dates?

USER: I will start my journey on Nov 11 and return on Nov 13.

ASSISTANT: Do you need a direct flight or connecting flight?

USER: I need a flight with single connection.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry to inform you that no flights found on your given name.

USER: Ok, it is not an issue. Thank you for your help.

ASSISTANT: Thank you for availing us.