You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

USER: I need to book a flight ticket from SFO to LAS, can you help me in booking a flight ticket?

ASSISTANT: When you are willing to travel?

USER: Sure, my scheduled dates are Aug 11 and Aug 13.

ASSISTANT: Do you have any connection limit?

USER: I prefer maximum one connection.

ASSISTANT: May, I know your good name?

USER: Sure, Thomas Carter here.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for reaching us.