You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I amend you today?

USER: I am Brandon Mitchell.

ASSISTANT: Ok.

USER: I am planning to meet my childhood friend after long time at Atlanta, ATL. So, can you please reserve a flight ticket for me?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: To proceed further I need your origin airport.

USER: My origin is Las Vegas, NV - LAS.

ASSISTANT: When did you schedule your journey?

USER: My journey dates are from 12/22 to 12/24.

ASSISTANT: Do you want any halt in between your journey?

USER: I need a halt in my journey.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: There is no flight found to your route on your specified dates.

USER: Not an issue, thank you.

ASSISTANT: Thanks for availing us.