You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am James Taylor.

ASSISTANT: How can I help you today?

USER: Please help me to book a flight ticket from OAK to SEA.

ASSISTANT: Can you share me your travelling dates?

USER: My trip dates are from Aug, 02 to Aug, 04.

ASSISTANT: Do you need any connection?

USER: I need a single connection flight.

ASSISTANT: May I know your depart and arrival time?

USER: I need to return in the evening.

ASSISTANT: Do you have any other requirements?

USER: I need a normal-cost airline.

ASSISTANT: Sorry to inform you that there are no flights available on your routes.

USER: Nothing to worry. Thank you for letting me know.

ASSISTANT: Thank you for choosing us.