You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me to find a flight in the normal-cost airlines from Denver?

ASSISTANT: Ok, I will help you with that. Can you please tell me your travelling dates?

USER: I am happy for your quick response.  I am willing to travel on the dates of 01/18 and 01/20.

ASSISTANT: May I know your travelling airport codes?

USER: The origin and destination airport codes are DEN and DFW.

ASSISTANT: May I know your name please?

USER: My name is Samantha Wright.

ASSISTANT: Sorry, no flights available on your route.

USER: It's ok, thanks a lot for searching the flights.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.