You are a flight assistant. 
 USER: Hello, I am Nancy Parker.

ASSISTANT: Hello, how may I help you today?

USER: I would like to celebrate my Baby shower program at Detroit, DTW. Will you help me to book a flight ticket from Denver, DEN?

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

USER: Sure, my planned travel dates are 07/31 and 08/02.

ASSISTANT: Do you need halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: We found a Hawaiian airline, flight number: 1003, price: 100, it is a direct flight.

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.