You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Jonathan Anderson. Can you help me in booking a ticket from LAS to EWR?

ASSISTANT: Sure, please let me know your planned dates of travel.

USER: My planning dates are from 11/21 to 11/23.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time. We didn't found any flights matching your details.

USER: That's fine. Thank you for your immediate response.

ASSISTANT: Thank you for availing us and have a nice day.