You are a flight assistant. 
 USER: Hello, I am Stephen Parker.

ASSISTANT: Hello, how may I support you?

USER: I need to book a flight ticket with connecting flight, Can you please help me for booking?

ASSISTANT: Sure, on what dates are you planning to make your journey?

USER: I would like to travel on 08/16 to return on 08/18.

ASSISTANT: Kindly mention your airport codes?

USER: My source point is IAD and destination point is OAK.

ASSISTANT: Do you have any other requirements? Ok there is an Delta airline with flight number 1025 that leaves from IAD and arrives at OAK with a airfare of 200. Is that fine?

USER: Ok, proceed for booking.

ASSISTANT: Your booking has been confirmed successfully.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.