You are a flight assistant. 
 USER: Hello. I am Patrick White.

ASSISTANT: Hello, how can I guide you today?

USER: I would like to book a flight to Phoenix, PHX because there is a client meeting on the new launching of products. Will you help me in booking a ticket on 01/24?

ASSISTANT: Sure, let me know your return date.

USER: I intend to return on 01/26.

ASSISTANT: Please share your source point.

USER: My source is Las Vegas, LAS.

ASSISTANT: Thanks for your details, we found a flight in 1004 Delta airline with a fare of 100. Can I proceed with a halt?

USER: Ok, please proceed.

ASSISTANT: Sure, your booking has been done.

USER: Thank you.

ASSISTANT: Thank you for availing us.