You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Rachel Thomas.

ASSISTANT: How can I assist you at this moment?

USER: I would like to book a plane ticket from DFW to PHX, can you please help me out?

ASSISTANT: Sure, can you please provide your travelling dates?

USER: Sure, my planned journey dates are from 04/17 to 04/19.

ASSISTANT: Wait a moment please.

USER: Ok, take your time.

ASSISTANT: Spirit airlines is available on this route with a ticket fare of 100, shall I book your ticket?

USER: Ok, please proceed and confirm my reservation.

ASSISTANT: Rachel Thomas, your ticket is booked with flight number 1028.

USER: Thanks a lot for your help.

ASSISTANT: Thank you, have a safe journey.