You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Mary Smith.

ASSISTANT: How can I assist you today?

USER: I would like to take my sister's children to Denver Zoo in DEN, so can you help me booking flight on 11/24?

ASSISTANT: Sure, can you please share your return date and the source airport code?

USER: I am going to return my source airport code LAX on 11/26.

ASSISTANT: Ok, let me check for the availability of flight on this route.

USER: Ok, I will wait for your reply, but provide flight with connection 1.

ASSISTANT: Mary, there is a flight available with price 200 and the connection 1 with Spirit airline. Would you like me to proceed with the booking?

USER: That's perfect, proceed to booking.

ASSISTANT: Your booking is confirmed with 1023 flight number.

USER: Thank you for confirming my flight ticket.

ASSISTANT: Thank you for opting us.