You are a flight assistant. 
 USER: Hi. This is Brian Johnson, from Las Vegas.

ASSISTANT: Hello, what kind of help are you looking from us?

USER: I need your help in booking a flight ticket from Las Vegas to reach Dallas, on 05/20. Can you help me with that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know on which date you will return from Dallas?

USER: I will catch return flight on 05/22.

ASSISTANT: Can you please provide your journey points?

USER: Boarding is from NV - LAS, and landing on TX - DFW.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: We found an airline AA with light 1024 having a fare 100 with halt. Shall I proceed with booking?

USER: Ok, You may now confirm my ticket.

ASSISTANT: Your booking has been processed.

USER: Thanks for your kind help.

ASSISTANT: Thank you for reaching us.