You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: I have planned to book a plane ticket from BOS to DFW, can you assist me in booking my ticket?

ASSISTANT: Sure, on what dates are you planning to travel?

USER: My preferred dates are Nov 14th and Nov 16th.

ASSISTANT: Will you be okay with a connecting flight or you need a direct flight?

USER: I am Ok with connecting flight.

ASSISTANT: Any other requirements to be met?

USER: Make sure that my return time must be afternoon.

ASSISTANT: On what name you want me to book the ticket?

USER: Susan Perez.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for choosing us.