You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I want to book a flight on Aug 22 to Orlando. Can you book a flight for me?

ASSISTANT: Sure, let me know your return date?

USER: I will return on Aug 24.

ASSISTANT: Do you have any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: May I know your airport codes?

USER: My source point is IAD and my destination is MCO.

ASSISTANT: Is there any other preferences?

USER: No.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us. May I know your good name?

USER: My name is Patricia Wright.

ASSISTANT: Thank you.