You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I would like to attend an event at Las Vegas, please help me in booking a ticket from ATL to LAS.

ASSISTANT: Sure, may I know your travelling dates?

USER: My planned travel dates are on Jan 21 and Jan 23.

ASSISTANT: On which name shall I reserve flight ticket?

USER: My name is Dennis Gonzalez.

ASSISTANT: May I know your specifications?

USER: I prefer connecting flight.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights available on your route due to bad weather forecast.

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

ASSISTANT: Thank you for reaching our service.