You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I render you at this moment?

USER: Please book a ticket from Philadelphia, PA-PHL to Oakland, CA-OAK.

ASSISTANT: Sure, may I know your travelling dates of journey?

USER: Travelling dates are from 03/17 to 03/19.

ASSISTANT: Do you need any lay over in between the journey?

USER: I need direct flight.

ASSISTANT: There are no flights available on your preferred dates.

USER: Ok.

ASSISTANT: Please help me with your good name?

USER: I am Laura Davis.

ASSISTANT: Thank you for reaching us.

USER: Thanks.