You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Carol Rodriguez here.

ASSISTANT: How may I lend a hand to?

USER: I would like to change my reservation as my exams postponed to next week, can you please help me with that?

ASSISTANT: Carol, I am willing to help you for this. Let me check your reservation status in our records.

USER: Sure, I will wait for your response.

ASSISTANT: I found a reservation, Can you please share me your airport codes?

USER: Sure, my airport codes are from LAS and IAH?

ASSISTANT: When you are planning to boarding?

USER: Ok, I would like to takeoff on 11/29 and return back on 12/01.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: As per your criteria, there is a flight with AA airlines and the ticket figure is 100. Shall I proceed for this?

USER: Ok, please proceed with booking.

ASSISTANT: Carol, your ticket is reserved in economy class with the flight-1012.

USER: Thank you for your service.

ASSISTANT: Thank you Carol for utilizing our agency.