You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Gregory Miller here, can you please help me in booking the ticket from PHX to IAD? As I'm planning to visit Washington.

ASSISTANT: Sure, when you are planning your trip?

USER: I'm planning to depart from my location on 04/25 and return by 04/27.

ASSISTANT: Thanks for waiting, we found a flight with your provided information in Delta airline with 1 connection and the fare is 100. Shall I confirm your ticket with this airline?

USER: That's fine for me, you can proceed for booking the ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you so much for your help in booking the ticket.

ASSISTANT: Most welcome.