You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Myself Samantha Gonzalez from Charlotte. I have to go to Las Vegas next week for attending a summit there, can you please book a flight ticket for me?

ASSISTANT: Sure, I am gleeful to help you out. May I know your airport codes please?

USER: Thank you for accepting my request, I would like to fly from CLT and destination airport is LAS.

ASSISTANT: Ok, may I know your travel dates please?

USER: I want to take off on 08/29 and please confirm my return ticket also on 08/31.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your time and find a best flight for me.

ASSISTANT: Thank you for waiting.

USER: It's ok.

ASSISTANT: Sorry, there is no flight available for your desired intents which are provided to me.

USER: Oh! It's ok no problem, I will contact another agency.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your information.