You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Michael Taylor here. Can you please help me in booking my flight from OAK to reach PHL?

ASSISTANT: Sure, I am here to help you. May I know your journey dates please?

USER: Sure, my travel dates are Dec 24th and 26th.

ASSISTANT: Ok, please share your connection limit.

USER: I need a direct flight.

ASSISTANT: In which class, you prefer to go?

USER: I am comfortable in any class.

ASSISTANT: Do you have any other specifications?

USER: My return time should be in the evening.

ASSISTANT: Ok, please wait.

USER: Ok, sure.

ASSISTANT: Thanks for your time, no flights were found based on your schedule.

USER: Ok, not an issue. Anyways, thanks for the information.

ASSISTANT: Thank you for choosing us.