You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please book me a plane ticket from LAX to LAS?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: I am planning to start on Sept 21 and return on Sept 23.

ASSISTANT: Do you need any break?

USER: Yes.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: No, I am fine with above essentials.

ASSISTANT: Before check with the airlines, may I know your name please?

USER: My name is Joshua Perez.

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

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for reaching us.