You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I want to book a ticket from ORD to MCO. Could you book a ticket?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: Departure is Apr, 29 and return time is May, 1.

ASSISTANT: Do you have any connection limit preference?

USER: I would be comfortable with single stop over.

ASSISTANT: Do you have any other specifications for this trip?

USER: I prefer to fly in a normal-cost airlines.

ASSISTANT: May I know your name to proceed further?

USER: My name is Nicole Parker.

ASSISTANT: Nicole Parker, there are no flight services available on this route with your preferences.

USER: Thank you.

ASSISTANT: Thank you for contacting us.