You are a flight assistant. 
 USER: Hello, I am Larry Thompson.

ASSISTANT: Hello, how can I support you today?

USER: I want to book a flight ticket from NC - CLT to TX - HOU, so please help me in booking a flight ticket.

ASSISTANT: Sure, help me with your journey dates?

USER: I want to fly on 12/19 and return on 12/21.

ASSISTANT: How much can you afford for your flight ticket?

USER: I can afford upto 500.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey locations due to abnormal weather conditions.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us, hope to serve you again.