You are a flight assistant. 
 USER: Hi,. I am Daniel King.

ASSISTANT: Hello. How may I assist you today?

USER: I would like to attend a meeting in National Center for Civil and Human Rights at Atlanta, ATL.

ASSISTANT: Ok.

USER: Will you help me in booking me a flight from Las Vegas, LAS?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: Please specify the travelling dates.

USER: 07/03 - 07/05 are my willing dates for travel.

ASSISTANT: Ok. Thanks for sharing your details.

USER: Ok.

ASSISTANT: No flights found in search on the specific days.

USER: Ok, I will choose other airline. Thank you.

ASSISTANT: Thank you.