You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to attend a Marriage in Denver. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your name please?

USER: My name is David Hall.

ASSISTANT: May I know your airports codes please?

USER: My airport codes are OAK and DEN.

ASSISTANT: Ok, may I know your travelling dates please?

USER: My travelling dates are Aug 08 and Aug 10.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: Do you have any other specifications please?

USER: I need single connecting flight.

ASSISTANT: There is a connecting flight of fare 100 with economy class in Delta airline, shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Ok, your reservation has been confirmed with flight number 1000.

USER: Thanks for helping me.

ASSISTANT: You are welcome.