You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Debra Lewis. Can you help me to book a flight from DFW to IAD?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are 04/13 and 04/15.

ASSISTANT: Here is a connecting flight with 1011 as flight number. Shall I proceed?

USER: Proceed with booking.

ASSISTANT: Ok, your ticket is confirmed.. Thank you for reaching us.