You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please assist me in booking a flight ticket from CLT to DEN?

ASSISTANT: Sure, may I know your trip dates?

USER: My planned journey dates are from Aug 12 to Aug 14.

ASSISTANT: Ok, do you have any other requirements?

USER: I prefer to travel in standard airlines.

ASSISTANT: Ok, please wait a minute.

USER: Sure, please check for  single connecting flight.

ASSISTANT: Thank you for waiting and we have found a flight in economy class with 1 connection in Frontier airlines and the fare of your flight will be 200. Do you like me to proceed your booking with this flight?

USER: I prefer only normal cost airlines.

ASSISTANT: Sorry, there is no flight available in normal cost airline.

USER: it's ok thank you.

ASSISTANT: May I know your name please?

USER: I am Jerry Jones.

ASSISTANT: Thank you to approach us.

USER: Thank you.