You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I would like to book a ticket from PHL to OAK, can you please help me out?

ASSISTANT: Sure, I will help you with that. Can you please provide your travelling dates?

USER: I am travelling on these dates May 4th and 6th.

ASSISTANT: Do you have any connection limit?

USER: I prefer single connected flight.

ASSISTANT: Any class preference do you have?

USER: I prefer business class.

ASSISTANT: On whose name I have to book the flight ticket?

USER: Book ticket on the name Alexander Hall.

ASSISTANT: We are apologize that, there are no direct flights running towards your region with your requested dates of travelling.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us, have a great day.