You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Melissa Hall. Could you please help me with finding a flight ticket on the route EWR to DTW?

ASSISTANT: Sure, can I know your travel dates?

USER: I would like to take off on 01/28 and return on 01/30.

ASSISTANT: Melissa, there is no flight available on your requested dates.

USER: That's ok, not an issue. Anyways, thank you for the information.

ASSISTANT: You are welcome.