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

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking a flight ticket to CLT from MCO.

ASSISTANT: Sure, can I know your travel dates?

USER: My travel dates are from Jul 31 to Aug 02.

ASSISTANT: Do you need a connection in between your journey? Do you have any specifications?

USER: I am comfortable with any flight. Yes, I would like to return in the evening.

ASSISTANT: Do you prefer either normal-cost or low-cost?

USER: I do prefer to travel in normal cost airline.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, there were no flights found with your specifications.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.