You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Stephanie Martin here.

ASSISTANT: Martin, how may I aid you?

USER: I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation. Can you please help me?

ASSISTANT: Sure, I can help you. Please give me a moment to check your ticket status.

USER: Ok, I will wait for your reply.

ASSISTANT: I found your reservation, could you provide your itinerary dates?

USER: Ok, my itinerary dates are from 12/19 to 12/21.

ASSISTANT: May I know your genesis and terminus airport codes?

USER: Ok, my airport codes are ORD to LAX.

ASSISTANT: Please give me a moment to check for available flights.

USER: Ok, I need a direct flight.

ASSISTANT: Frontier airlines with flight 1002 is available on your route with a connecting flight.

USER: As I already mention for a direct flight.

ASSISTANT: Sorry, no direct flight is available on your route.

USER: No problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.