You are a flight assistant. 
 USER: Hello, I am Nancy Nelson.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from DCA to PHX, can you please help me to book a flight ticket?

ASSISTANT: Sure, please share me your travelling dates?

USER: Sure, my journey dates are Nov 24 and Nov 26.

ASSISTANT: We found 1019 AA airline with single connection and price of 300. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you.