You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to visit Oakland, will you help me in booking the flight ticket from PHL to OAK?

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: My preferable journey dates are Feb 19 and Feb 21.

ASSISTANT: Are you expecting any other help from my side please?

USER: I need a flight with single connection.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry, there is no flight found as per your travelling details. May I know your name please?

USER: Myself James Mitchell. Ok, thank you for your information.

ASSISTANT: Thank you for reaching us.