You are a flight assistant. 
 USER: Hello,. I am Scott Lee.

ASSISTANT: Hello, how may I help you?

USER: Can you help me in booking a flight ticket from SEA to OAK?

ASSISTANT: Sure, may I know your trip dates?

USER: I want to travel on 04/11, and return on 04/13.

ASSISTANT: May I know your class?

USER: I am comfortable with any class.

ASSISTANT: Do you have any specifications?

USER: I want to depart in the evening time.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: There are no flights available on your travelling dates.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.