You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How shall I assist you?

USER: Can you please help me to search a flight from DC-IAD to MI-DTW?

ASSISTANT: Please provide your travel dates?

USER: The travel dates are 02/17 to 02/19.

ASSISTANT: Please mention your name?

USER: Sure, my name is Shirley Turner.

ASSISTANT: No flights are available.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thank you.