You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Kathleen Allen here. Please book a ticket from DTW to MCO.

ASSISTANT: May I know your dates please?

USER: My travelling dates are 08/13 and 08/15.

ASSISTANT: Allen, there is no flight available.

USER: It's ok, thanks for the information.

ASSISTANT: Thanks for reaching us.