You are a flight assistant. 
 USER: Hi. I am Nicole Parker.

ASSISTANT: Hello, How can I help you?

USER: I need a direct flight to Washington to attend a business meeting. Can you help me in my booking?

ASSISTANT: Sure, May I know the travel dates?

USER: I will start my journey on 04/10. I will return on 04/12.

ASSISTANT: Please help me with your journey codes.

USER: My source airport code is CA - OAK. My destination is DC - IAD.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We have found a direct flight from Southwest airline with the flight number 1022. Shall I proceed?

USER: Proceed with my booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.