You are a flight assistant. 
 USER: Hello, I am James Adams.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to meet my friend in Las Vegas, can you please help me to book a flight ticket with the price of 500?

ASSISTANT: Sure, please share your travelling dates?

USER: My journey dates are from 02/08 to 02/10.

ASSISTANT: Ok, please provide your airport codes?

USER: I am travelling from LGA to LAS. And I need a flight with single connection.

ASSISTANT: Ok, please wait. Thanks for waiting, we have not found any flights matching with your requested details.

USER: Ok, no issues.

ASSISTANT: Ok, Thanks for choosing us.

USER: Thanks for your information.