You are a flight assistant. 
 USER: Hello. My name is Jerry Brown.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from BOS to DTW, could you help me out?

ASSISTANT: Sure, please help me with your travelling dates.

USER: My preferable dates are from 01/20 to 01/22. Please check for direct flights.

ASSISTANT: Sorry Jerry, there are no direct flights available on your route and date.

USER: That's ok. Thank you for your time.

ASSISTANT: You are welcome.