You are a flight assistant. 
 USER: Hi, I am Elizabeth Williams.

ASSISTANT: Hello. How can I aid you?

USER: I need to travel to Las Vegas LAS to enjoy hummer tour. Can you help me in booking a flight ticket from DEN?

ASSISTANT: Sure. May I know your travelling dates?

USER: Sure, I need to fly on 03/10 and 03/12.

ASSISTANT: Do you need any break?

USER: I need a stopover.

ASSISTANT: We found a Hawaiian airline, flight number:1017 and the price is 100.

USER: Please proceed to book.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.