You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Raymond Scott. I am planning to visit SEA to meet my sister, can you please find a flight from DTW?

ASSISTANT: On which dates you are willing to travel?

USER: My travelling dates are 04/16 and 04/18.

ASSISTANT: Sorry, there is no flights available.

USER: That's ok, thank you for your information.

ASSISTANT: Most welcome.