You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: George Carter here. I want to travel from LAS to SFO. Can you please help me for booking the flight ticket?

ASSISTANT: Sure Carter, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travelling dates are from 01/10 to 01/12.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flights found on these dates.

USER: Thank you for the information.

ASSISTANT: Thank you for choosing our services.