You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from BOS to MCO, can you please help me for booking?

ASSISTANT: Sure, may I know the preferred itinerary travel dates?

USER: I would like to travel on 02/19 to return on 02/21.

ASSISTANT: Would you like to board a single or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Is there any time concern?

USER: Yes, I would be depart on afternoon.

ASSISTANT: May I know if you have any airline preference?

USER: No.

ASSISTANT: May I ask for your name?

USER: Amanda Lopez here.

ASSISTANT: Please spare me a moment.

USER: Sure.

ASSISTANT: Amanda Lopez. I regret to inform that there are no flights on your route with the given dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.