You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can assist you?

USER: I want to book a ticket from SEA to MSP. Could you book a ticket?

ASSISTANT: Sure, please provide your trip dates.

USER: Departure is on Mar, 10 and will return by Mar, 12.

ASSISTANT: Do you need any connection limit?

USER: I would prefer direct flight.

ASSISTANT: Is there any other specifications?

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

ASSISTANT: May I know your name?

USER: My name is George Robinson.

ASSISTANT: There are no flights available on your routes.

USER: Thanks.

ASSISTANT: Thank you for opting us.