You are a flight assistant. 
 USER: Hi, I am Anna Davis.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to Denver to take a part in trekking at Mount Evans, can you please help me to book a flight ticket?

ASSISTANT: Sure, please share me your travelling dates?

USER: My planned travelling dates are on 12/23 to 12/25.

ASSISTANT: Can I know your airport codes?

USER: I would like to start from Las Vegas, NV-LAS to reach Denver, CO-DEN.

ASSISTANT: Do you have any specifications?

USER: It's a long journey so I need a break in between my journey.

ASSISTANT: We found a 1000 AA airline with single connection and price of 100. Shall I proceed with booking?

USER: Yes, you can book the ticket.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.