You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you at this moment?

USER: I am planning to promote my business at Las Vegas. Can you please help me in reserving the ticket from IAD to LAS?

ASSISTANT: Sure, may I know your good name?

USER: Myself Michael Hill.

ASSISTANT: Could I have your journey dates, please?

USER: I am willing to take-off June 29 and again I will be return back on July 1.

ASSISTANT: Please let me know your connection limit?

USER: My flexible with single connection.

ASSISTANT: Do you have any other preferences?

USER: My class preference is business.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Not a big deal, anyhow thank you very much for your kind information.

ASSISTANT: Thank you for choosing us.