You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I would like to attend business meeting at Oakland, please help me in booking a ticket from LAS to OAK.

ASSISTANT: Sure, can you please mention with your dates of journey?

USER: My planned travel dates are on June 29 and July 1.

ASSISTANT: May I know your name please?

USER: My name is Richard Anderson.

ASSISTANT: Do you have any other specifications please?

USER: I prefer business class for my trip.

ASSISTANT: Are you having any other specifications please?

USER: I need a flight with single connection.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Anderson, there is no flight found as per your travelling details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: You are welcome.