You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Elizabeth King.

ASSISTANT: What kind of help are you expecting from our side?

USER: I have a sudden meeting to attend with my client in Dallas, could you help me in booking the ticket?

ASSISTANT: Yes, I'm here to help you out. Could you please provide your preferable dates?

USER: The dates of travel are from 04/18 to 04/20.

ASSISTANT: Ok, please let me know your origin and destination airport codes?

USER: The nearest airport codes are DEN to DFW.

ASSISTANT: There is a flight available with Spirit airlines on your request, can I proceed?

USER: Please proceed.

ASSISTANT: Ok, your ticket is booked and the flight number is 1022.

USER: Thank you for your help.

ASSISTANT: Thank you, have a great trip.