You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Dorothy Young here, want to travel from DFW to IAD.

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are from 07/20 to 07/22.

ASSISTANT: There is a flight available for you in UA airline with 1 connection. Shall I proceed?

USER: Yes, please.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you.

ASSISTANT: Most welcome.