You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are from May,27 and May,29.

ASSISTANT: Is there any class preference for you?

USER: In economy class I prefer to travel.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: May I know your good name?

USER: Myself Dorothy Campbell.

ASSISTANT: We found an airline: JetBlue, flight number: 1020 and price is 200 with one connection.

USER: Please confirm my flight ticket.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for reserving my flight ticket.

ASSISTANT: Thank you for reaching us.