You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: Can you aid me to book a flight ticket from BOS to HOU?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travel dates are Oct 11 and Oct 13 respectively.

ASSISTANT: Do you have any other specifications?

USER: I prefer for connecting flight to travel and my depart time should be in the afternoon.

ASSISTANT: Please help me with your name for booking.

USER: Jack Roberts here.

ASSISTANT: I am sorry no flights found on your route.

USER: Thank you.

ASSISTANT: Thank you for choosing us.