You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Could you please check the flight availability in normal cost airline?

ASSISTANT: Sure, can you please help me with your source and destination airport codes?

USER: I am heading to CLT from LAS.

ASSISTANT: Please provide your planned travel dates.

USER: My travel dates are Nov 25 and Nov 27.

ASSISTANT: Do you prefer halt in between your journey?

USER: Yes, I need a stopover in between my journey.

ASSISTANT: Please let me know if you have any other specifications.

USER: I want to return in the afternoon.

ASSISTANT: Can I have your good name please?

USER: My name is David Clark.

ASSISTANT: Sorry, there are no flights available for you on those dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.