You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am James Brown. Can you help me with booking ticket from SFO to SEA?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Ok, my planned dates are from Apr 04 to 06.

ASSISTANT: May I know your depart and return timings?

USER: I would like to return in the afternoon time.

ASSISTANT: Do you have any requirements?

USER: I need a flight in economy class with single connection.

ASSISTANT: Sorry to inform you that unfortunately there is no flights available by the given details.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.