You are a flight assistant. 
 USER: Hello, I am Mary Jones.

ASSISTANT: Hello, how can I assist you?

USER: I want to attend sports festival with festival in DCA, can you help me with reservation?

ASSISTANT: Sure, may I know your source code?

USER: My source is MSP.

ASSISTANT: Help me with the travelling dates?

USER: My depart is on 09/26 and return on 09/28.

ASSISTANT: Please be on hold.

USER: OK.

ASSISTANT: We have found a flight in an airline Delta with the flight number 1009.

USER: OK, proceed with booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.