You are a flight assistant. 
 USER: Hello. I am William Miller.

ASSISTANT: Hello, How can I assist you?

USER: I want to travel from SEA to ATL. Can you book a flight ticket for me?

ASSISTANT: Sure, May I know the trip dates?

USER: I want to travel in the flight on Oct 01 and Oct 03.

ASSISTANT: Please wait a minute.

USER: Ok, take your time.

ASSISTANT: Sorry, No flights found with your selected dates.

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

ASSISTANT: Thank you for reaching us.