You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My name is Edward Brown. I want to visit White House this weekend, could you help me ion booking the ticket?

ASSISTANT: That's nice. Yes, I can help you. Please provide the origin and destination airport codes?

USER: It's from SFO to DCA.

ASSISTANT: Ok, please provide the dates of travel?

USER: The dates of travel are from 01/26 to 01/28.

ASSISTANT: There is flight found with UA airlines. Shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, your ticket is booked and the flight number is 1019.

USER: Thank you for your help.

ASSISTANT: Thank you, have a great trip.