You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Donna Garcia. Will you please help me in searching the flight from ATL to SEA? Because I have planned a trip to Seattle.

ASSISTANT: Sure, can you share your journey dates?

USER: Thank you. I want to travel on the dates of 09/21 and 09/23.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a single connecting flight. So, please provide me the best flight.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: It's ok, I will choose some other source to travel. Thank you for searching.

ASSISTANT: Thank you for reaching us.