You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to celebrate my birthday in Las Vegas, so please book a flight ticket from CLT to AUS.

ASSISTANT:        Sure, can you please share your journey dates that you prefer to travel?

USER: I want to fly on Apr 14, return on Apr 16.

ASSISTANT: Do you require any stopovers in your journey?

USER: Yes, I need a single connecting flight.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I do not have any other requirements.

ASSISTANT: Can you please share your name?

USER: My name is Donald Perez.

ASSISTANT: Ok, please wait a minute I will get back to you with the flight details.

USER: Sure.

ASSISTANT:  Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.