You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any assistance from us?

USER: Yes, can you help me for changing my existing reservation?

ASSISTANT: I will definitely help you. Can you please tell your name?

USER: I am Thomas Young.

ASSISTANT: I have found your previous reservation, can you please tell your airport codes?

USER: My new airport codes are LGA and LAS.

ASSISTANT: Ok, may I know your travelling dates?

USER: I am going to fly on 05/08 and I am going to return on 05/10.

ASSISTANT: The Spirit airline with flight number 1014 is available having price as 100 and connection as 1. Shall I proceed booking?

USER: Proceed to booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for confirming my flight ticket.

ASSISTANT: Thank you for choosing us.