You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Steven Robinson.

ASSISTANT: How may I assist you today?

USER: I need a flight to travel on 04/08 to the location SEA on the opening of my new company, can you find a flight for me to travel?

ASSISTANT: Sure, I will help you to find a flight. Before that, may I know your boarding airport code and return journey date?

USER: My boarding airport code is OAK and my return journey date will be on 04/10.

ASSISTANT: Sorry Steven, I cannot find any flight with your travel dates.

USER: Oh! It's ok, no problem. I will travel on some other day.

ASSISTANT: Thanks for contacting us, have a great day.

USER: Thank you.