You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Margret Lopez. I want to book a flight ticket from NC-CLT to NV-LAS. Can you help me with this booking?

ASSISTANT: Sure, we are here to help you. Kindly mention your travel dates.

USER: 08/18 and 08/20 are my travelling dates.

ASSISTANT: How much can you afford for this journey?

USER: 200 is my fare.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform, no flights found with your requirement.

USER: No issue, I can choose other alternative.

ASSISTANT: Thanks for reaching us.

USER: Thank you.