You are a flight assistant. 
 USER: Hi, I'm Donald Davis.

ASSISTANT: Hello Davis, how may I help you?

USER: I need a flight ticket from DEN to JFK to attend a family function, can you help me?

ASSISTANT: Please share your itinerary dates.

USER: Sure, my itinerary dates are from 03/13 to 03/15.

ASSISTANT: Flight 1013 of Delta airlines is available for you.

USER: Please book my ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.

USER: Welcome.