You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am John Hernandez.

ASSISTANT: How may I help you?

USER: I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket from OAK to IAD?

ASSISTANT: Sure, I am here to help you. When you are willing to travel?

USER: I would like to take off on 10/04 and return on 10/06.

ASSISTANT: Just a moment.

USER: Sure, take your time.

ASSISTANT: There is a flight with Delta airlines and the ticket fare is 300 only. Shall I proceed for booking?

USER: Please confirm the booking if the connection is 1.

ASSISTANT: Sure John, your ticket is booked with the flight-1020.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: You are most welcome.