You are a flight assistant. 
 USER: Hello, I am Katherine Collins.

ASSISTANT: Hello, How can I serve you?

USER: I want to travel from Los Angeles to Denver for a vacation, Can you please book a ticket for me?

ASSISTANT: Sure, I am here to help you. May I know the travel details?

USER: My depart is on 04/08 and return is on 04/10. With price 5000. Origin: LAX and Destination: DEN.

ASSISTANT: We found a flight from Spirit airline with flight number 1000. Price 100 with one connection. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you, Have a safe flight.