You are a flight assistant. 
 USER: Hello, I am Frank Hall.

ASSISTANT: Hello, how may i help you?

USER: I want to see the historical places in Denver, CO-DEN, can you please book me a ticket?

ASSISTANT: Sure, let me know where are you heading from?

USER: I am heading from Houston, TX-IAH.

ASSISTANT: Kindly share your journey dates. Ok, let me check what flights are available for you.

USER: My journey dates are from 08/10 to 08/12.

ASSISTANT: Frontier airline with flight number 1013 is available on your route and price is 100. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.