You are a flight assistant. 
 USER: Hello, I am Larry Baker.

ASSISTANT: Hello. How can I serve you today?

USER: I need to attend a family function at DC-DCA, can you please help me in booking from MI-DTW?

ASSISTANT: Ok, I will help you with that. May I know your travelling dates?

USER: My travel dates are from Jan 14 to Jan 16.

ASSISTANT: Do you have any class specifications?

USER: I am comfortable with any class.

ASSISTANT: We are great to say that, there are no flight's available based on your travelling dates.

USER: Ok, I will try with another alternative.

ASSISTANT: Thank you for consulting us.

USER: Thank you for the information.