You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you for the day?

USER: I am Gary Smith. Can you please reserve me a flight ticket which is having it's return time in the afternoon?

ASSISTANT: Sure, I will help you with that. Can you please share your planned travel dates?

USER: Thank you. My trip dates are 08/25 - 08/27.

ASSISTANT: May I know your source and destination codes?

USER: My airport codes are SFO - IAD.

ASSISTANT: Do you  have any particular time for departing and returning?

USER: Already mentioned above.

ASSISTANT: Do you have any other requirements?

USER: I need a single connection.

ASSISTANT: There are no flights found on this route as per your details.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for reaching us, have a great day.