You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you aid me to book a ticket from SEA to SFO?

ASSISTANT: May I know your planned trip dates?

USER: my travel dates are Oct 8 and Oct 10 respectively.

ASSISTANT: Do you have any airline preference?

USER: I prefer for normal cost airlines.

ASSISTANT: Do you have any class preference?

USER: No class preferences for me.

ASSISTANT: Do you have any connection limit preference?

USER: Make sure that connection limit is single.

ASSISTANT: May I know your time concern?

USER: I would like to depart in afternoon.

ASSISTANT: Could you help me with your name please?

USER: Nancy Rodriguez here.

ASSISTANT: Sorry, there is no flight available as per your request.

USER: Thank you.

ASSISTANT: Thank you fro reaching us.