You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: While checking my recent reservation status I mistakenly cancelled my reservation and again I need booking from DEN to LAS, could you mind help me in booking?

ASSISTANT: On which dates you are willing to travel?

USER: My travelling dates are from 12/06 to 12/08.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 100 which is provided by AA airlines. Would you like to book this flight for your journey?

USER: Please proceed the booking with the name Gregory King.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Most welcome.