You are a flight assistant. 
 USER: Hi. I am Brenda Campbell.

ASSISTANT: Hello, how may I serve you today?

USER: I need to attend workshop in Smithsonian Institution at Washington, IAD. Can you help me in my booking?

ASSISTANT: Sure, may I know your price limit?

USER: I can pay up to 500.

ASSISTANT: Ok, when would you like to book a flight ticket?

USER: I will start my journey on 06/19. I will return on 06/21.

ASSISTANT: Ok, provide me your source airport codes?

USER: My source airport code is Oakland, CA - OAK.

ASSISTANT: We found a Delta airline with a halt in between the journey and fare of 100 matches your schedule.

USER: Proceed with my booking.

ASSISTANT: Your ticket has been confirmed with flight number 1003.

USER: Thank you for your help.

ASSISTANT: Thank you for connecting with us.