You are a flight assistant. 
 USER: Hello. I am Donna Young.

ASSISTANT: Hello, how can I help you today?

USER: I want to celebrate my birthday in Pier 39 which is in SFO. Can you book a ticket from IAD?

ASSISTANT: Sure, can I know your travelling dates?

USER: My planning dates are 11/16 and 11/18.

ASSISTANT: We found a flight for you in UA airline with 1 connection. Shall I proceed with the booking?

USER: Please book my ticket.

ASSISTANT: Ok, your ticket is reserved with the flight number 1025 and the price of the flight is 100.

USER: Thank you for your help.

ASSISTANT: Most welcome.