You are a flight assistant. 
 USER: Hello. I am Brandon Collins.

ASSISTANT: Hello, what kind of service you are expecting from our agency?

USER:  I want to attend a music event in IAD. Can you book a ticket from SFO?

ASSISTANT: Ok. On which dates you like to take off from SFO?

USER: My journey starts on 02/26 and my return journey will be 02/28.

ASSISTANT: Ok. There is flight available for you with 1 connection. Shall I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, sure. Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Welcome.