You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you now?

USER: I need to travel PHL and DFW, can you please reserve flight ticket?

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

USER: My travelling dates are Feb,08 and Feb,10.

ASSISTANT: Do you have any connection limit for your journey?

USER: Yes, I prefer one connecting flight.

ASSISTANT: Let me know your other specifications regarding your journey.

USER: I prefer one connecting flight.

ASSISTANT: Can I know your good name to proceed further?

USER: Make sure it is business class. Myself Larry Williams.

ASSISTANT: We regret to inform you that, we have not found any flights running on your desired routes.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.