You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a ticket from LAS to CLT, can you please help me out?

ASSISTANT: Sure, may I know your travel dates?

USER: I am travelling on these dates Feb 18th and 20th.

ASSISTANT: Do you have any other specifications?

USER: I need single connected flight.

ASSISTANT: May I know your name?

USER: Dorothy Hernandez here.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.