You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephen Lopez.

ASSISTANT: How can I help you, Lopez?

USER: I am planning to meet my grandparents at Las Vegas, can you please help me in booking a flight ticket from BOS to LAS?

ASSISTANT: Sure, may I know your planned journey dates please?

USER: My preferable journey dates are from 12/29 to 12/31.

ASSISTANT: Give me a moment while I search for the availability of flights.

USER: Sure, take your own time.

ASSISTANT: Hawaiian airlines is providing service on your preferred route with price 100. Shall I book the ticket?

USER: Please reserve my ticket with this airlines.

ASSISTANT: Your ticket is confirmed and the flight number is 1022.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for contacting us, have a good day.