You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am David Carter. I would like to book a ticket from PHL to SEA, can you please help me out?

ASSISTANT: Sure, let me know your travelling dates?

USER: I am travelling on these dates Nov 2nd and 4th.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a single connected.

ASSISTANT: May I know your depart and arrival timings?

USER: I prefer departure time in the afternoon.

ASSISTANT: Thanks for your details, there is no flight found on your journey dates.

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

ASSISTANT: Thank you for availing us.