You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I have to plan to surprise my grandson on his birthday by going to his college, Oakland University. Please help me to reach Oakland.

ASSISTANT: Sure, may I know your good name please?

USER: Myself  Karen Parker.

ASSISTANT: Please share your travelling airport codes.

USER: DCA and OAK are the respective airport codes.

ASSISTANT: May I know on which dates your willing to travel?

USER: His birthday is on Dec-7, I need to start on Dec, 6 and return back on Dec, 8.

ASSISTANT: Is there any specific class preference for you?

USER: I am good with any class to fly.

ASSISTANT: Do you prefer any airline preference?

USER: I am good with any airlines that returns in the evening form Oakland.

ASSISTANT: May I know your connection limit please?

USER: I prefer to have a break in my journey.

ASSISTANT: Sure, Please wait for a moment.

USER: Ok, I will follow your instructions.

ASSISTANT: There is a connecting flight of fare 200 with economy class in American airline, shall I proceed for booking?

USER: Great! I can afford that ticket. Please book it for me.

ASSISTANT: Your reservation has been confirmed with flight number 1015.

USER: I really appreciate your service. Thank you very much.

ASSISTANT: You are welcome.