You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be of your service today?

USER: I have to go to Oakland to attend a graduation day.

ASSISTANT: Sure, may I know your journey details please?

USER: So, book a ticket from DCA to OAK. My travelling dates are 03/17 and 03/19.

ASSISTANT: Ok, may I know your name please?

USER: My name is Margaret King.

ASSISTANT: Ok, please wait I will revert you in a while.

USER: Ok.

ASSISTANT: Thanks for your patience, flight 1005 with UA airlines matching with your given details. The price is 100  with single connection.

USER: Confirm the ticket.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thanks for assisting me.

ASSISTANT: Thank you for connecting with us.