You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to attend an event at Las Vegas, please help me to book my flight ticket from IAH to LAS.

ASSISTANT: Sure, can I know your travelling dates?

USER: I will start my journey on Feb 26th and return back on Feb 28th.

ASSISTANT: On which name should I reserve the flight ticket?

USER: Sure, please book in the name of James Edwards.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need single connection.

ASSISTANT: Do you have any other specifications?

USER: I prefer for a business class.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: No problem. Anyway, thank you.

ASSISTANT: Thank you for reaching us.