You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Richard Martinez. Can you please find a flight which is returning in the evening time from Seattle?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: The planned travel dates are Sept 07 and Sept 09.

ASSISTANT: Can you please share your airport codes?

USER: The source and destination airport codes are LAX and SEA.

ASSISTANT: Do you have any particular time for departing and returning? Would you like to prefer direct flight or connecting flight?

USER: I have mentioned at the beginning that the returning time should be in the evening. I prefer a single connecting flight to travel.

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

USER: It's ok, not a problem with that. Thank you for your time.

ASSISTANT: You are welcome.