You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I need your help in booking my flight ticket from DEN to SEA, can you please help me to book my flight ticket?

ASSISTANT: Sure, can you share your trip dates?

USER: Sure, I have to depart on Oct 6th and also please book my return ticket on Oct 8th.

ASSISTANT: Do you have any preferences?

USER: I prefer for an economy class.

ASSISTANT: Do you have any other specifications?

USER: I need a flight with single connection.

ASSISTANT: May I know your name?

USER: My name is John Roberts.

ASSISTANT: There is a connecting flight with number 1002 in airline Delta, the fare is 100 in economy class. Can I book it?

USER: Happy to hear that, please book the ticket for me.

ASSISTANT: Your ticket is reserved, the depart time is 20:00 PM and return time is 16:00 PM.

USER: Thank you very much.

ASSISTANT: Thank you for reaching us.