You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Laura Mitchell here. I want to meet my aunt in MCO, can you book a flight reservation for me from DTW?

ASSISTANT: May I know your desired travel dates please?

USER: I need a direct flight on the dates from 07/11 to 07/13.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Oh! That's very sad to know, thank you for checking anyways.

ASSISTANT: Thank you for opting us.

USER: You are welcome.