You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I oblige you today?

USER: Please book a ticket on my name Mark Wilson, As I want to travel Oakland to submit my record at university.

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Do you need a stopover in between your journey?

USER: Yes, I need one.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: Origin is DC - IAD, Washington.

ASSISTANT: OK.

USER: Destination is CA - OAK.

ASSISTANT: What are your planned trip dates?

USER: I want to start on 08/30 and return on 09/01.

ASSISTANT:  Ok, Is there any restriction for price?

USER: I want to spend only 200.

ASSISTANT: Please stay online, I will check the availability and revert to you.

USER: Sure.

ASSISTANT:  Thanks for your precious time. We found Southwest airline fare of 100. Shall I proceed for booking with single stop over flight?

USER: It is perfect, please proceed.

ASSISTANT: Your ticket has been confirmed with airline number 1001.

USER: Thank you for opting me.

ASSISTANT: Thank you for choosing us. Have a safe journey!.