You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a ticket from OAK to DCA, can you help me?

ASSISTANT: Sure, can you please mention with your dates of journey?

USER: My travel dates are June 25 and 27.

ASSISTANT: May I know your good name please?

USER: I am Christopher Davis.

ASSISTANT: Are you expecting any other help from my side please?

USER: I want to return in the evening.

ASSISTANT: Please wait for a mean while.

USER: I prefer a connecting flight.

ASSISTANT: I found a connecting flight of fare 100 with the Delta airline, shall I proceed with this booking?

USER: You can book it.

ASSISTANT: Ok, I have reserved your ticket with the flight number 1012.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a safe journey.