You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I need to book a ticket from MCO to ORD?

ASSISTANT: OK, may I know your journey dates?

USER: My departure date is on 04/22 and return will be on 04/24.

ASSISTANT: Sorry, unfortunately there is no flights in these dates?

USER: It's fine.

ASSISTANT: May I know your name for formalities?

USER: I'm Michael Perez.

ASSISTANT: OK.

USER: Thank you for your immediate response.

ASSISTANT: Thank you for choosing our service.