You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a flight ticket from OAK to LAX to meet my friend. Can you help me in booking a connected flight?

ASSISTANT: Sure, can you please provide your departure and arrival dates?

USER: My journey dates are Jan 01 and Jan 03.

ASSISTANT: Do you have any specifications to be met?

USER: I am looking for a return flight time at afternoon.

ASSISTANT: Are you looking for any preferred class?

USER: I prefer a business class.

ASSISTANT: Can I have your name to proceed?

USER: I am Joshua Collins.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.