You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Donna Williams here.

ASSISTANT: How may I help you?

USER: Will you please find a flight from EWR to IAD?

ASSISTANT: Sure, I will help you out. May I know your travelling dates please?

USER: My departure date is 04/01 and return date is 04/03.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: There is a flight with flight number 1000 with connection 1, can I proceed with this flight?

USER: Please proceed for booking the ticket.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing our services.