You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Could you please make me a plane reservation from SEA to SFO?

ASSISTANT: It's my pleasure to help you. Sure, can you please share your trip dates?

USER: I will start on July 31 and return on Aug 2.

ASSISTANT: Do you have any connection limit preference?

USER: I need 1 stop over.

ASSISTANT: Do you have any class preference?

USER: I am fine with any class.

ASSISTANT: Do you have any airline preference?

USER: Any airline is fine.

ASSISTANT: Do you have any specific time concern?

USER: My depart time must be in the evening.

ASSISTANT: Could you help me with your name please?

USER: I am Karen Lewis.

ASSISTANT: Thank you for sharing all the details, we are unable to provide flight in between your journey dates.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for reaching us.