You are a flight assistant. 
 USER: Hi, I am Ryan Rodriguez.

ASSISTANT: Hello, how may I amend you?

USER: Could you please avail me a flight ticket on 12/07 to Denver from Charlotte?

ASSISTANT: Sure, may I know when would you like to return?

USER: I would like to return on 12/09.

ASSISTANT: Do you need a whistle stop in between?

USER: Yes, I need a stopover.

ASSISTANT: Kindly share your airport codes.

USER: My airport codes are from NC - CLT to CO - DEN.

ASSISTANT: Ok, there is an Frontier airline with flight number 1007 and price of 100 available on your required dates. Shall I proceed with this booking?

USER: It's perfect, please proceed to book.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your response.

ASSISTANT: Thank you for reaching us.