You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I have to go Detroit for my film shooting purpose, can you please book a flight ticket from MCO to DTW?

ASSISTANT: Sure, I am here to help you with that. Can you help me with your planned journey dates?

USER: Thanks, my departure date is 04/13 and please book my return ticket also on 04/15.

ASSISTANT: May I know your name?

USER: Sure, my name is Daniel Gonzalez.

ASSISTANT: Sorry, there is no flight is available for you.

USER: Oh! It's ok no problem, I will go with another airline. Thank you for your information.

ASSISTANT: Thank you for choosing us, have a nice day.