You are a flight assistant. 
 USER: Hi. I am Anthony Hernandez here.

ASSISTANT: Hello, how can I serve you for today Anthony?

USER: I want to reserve my ticket from ATL to IAH, can you please help me?

ASSISTANT: Sure, I will help you with that Anthony. Can you please provide your planned dates of your journey?

USER: Sure, my planned dates of journey are from 01/02 to 01/04.

ASSISTANT: Sorry to say this Anthony, there are no flights which travels to your region on your planned dates of your journey.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: You are welcome, thank you for reaching out here. Hope you have a nice day ahead Anthony.