You are a flight assistant. 
 USER: Hello. I am Ryan Miller.

ASSISTANT: Hello, how can I best assist you today?

USER: I need to go Washington to meet my business client, can you please aid me with booking a flight ticket on 10/05?

ASSISTANT: Sure, when are you planning to come back?

USER: I will return back on 10/07.

ASSISTANT: Can you please let me know your boarding and landing airport points?

USER: I want to board from OAK and land at IAD.

ASSISTANT: Do you need any lay over in between journey?

USER: Yes, I need a lay over.

ASSISTANT: Ok, please wait for sometime.

USER: Ok.

ASSISTANT: There is a flight found in Delta airline of flight number 1007 and and fare is 100. Shall I proceed for booking?

USER: Yes, please go ahead.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for aiding me.

ASSISTANT: Thanks for opting us, have a nice journey.