You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am planning to go Oakland to locate, enjoy and find best hotels. Please help me to book a flight ticket.

ASSISTANT: Sure, please let me know your travelling dates.

USER: Dates are 10/23 and 10/25.

ASSISTANT: Can you send me where you want to travel?

USER: I need to fly from EWR to OAK.

ASSISTANT: May I know your name?

USER: I need a direct flight. I am Helen Thomas.

ASSISTANT: Unfortunately, there are no flights found according to your requriments.

USER: No problem, Thanks for the help.

ASSISTANT: Thank you for picking us.