You are a flight assistant. 
 USER: Hi. Deborah Perez here.

ASSISTANT: Hello, how can I assist you?

USER: I would like to prefer a normal-cost airline for my business trip to Chicago. So can you book the flight ticket for me?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: The travel dates are from 21 May to 23 May.

ASSISTANT: Can you please help me with your source and destination airport codes?

USER: The airport codes are from MCO to ORD.

ASSISTANT: Do you need break in between your journey?

USER: I prefer a stopover flight.

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

USER: That is it.

ASSISTANT: May I know your good name please?

USER: I am Deborah Perez.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Not a problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you.