You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER:  I want to book a flight ticket from BOS to LAS. Could you help me in booking?

ASSISTANT: Ok, may I know your planned dates for this journey?

USER: My travelling dates are July,21 and July,23.

ASSISTANT: Ok, please mention your connection preference.

USER: I prefer one connecting flight.

ASSISTANT: May I know your name?

USER: Myself Frank Campbell.

ASSISTANT: Flight-1020 is available for you with 1 connection by American Airlines. Can I book it?

USER: Please proceed with the reservation.

ASSISTANT: Your ticket is booked, thank you for choosing us.

USER: Thank you for reserving my flight ticket.

ASSISTANT: Have a nice day.