You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit Lincoln Memorial at Washington, please help me in booking a ticket.

ASSISTANT: Sure, can you help me with your journey dates?

USER: Sure, my journey dates are from 06/04 to 06/06.

ASSISTANT: May I know your name?

USER: My name is Robert Lee.

ASSISTANT: Let me know your airport codes, please?

USER: My airport codes are from EWR to IAD.

ASSISTANT: Thank you, please wait for a moment.

USER: Sure.

ASSISTANT: I have found a flight -1028 travelling towards your destination. Shall I proceed?

USER: Ok, please proceed my booking.

ASSISTANT: Sure, your ticket has been booked, have a safe journey.

USER: Thank you for your help.

ASSISTANT: You are welcome.