You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me in booking a flight ticket from SFO to LAS?

ASSISTANT: Please provide your trip dates.

USER: My travel dates are from Jan 29 to Jan 31.

ASSISTANT: Do you need any connection limit?

USER: Yes, I would prefer connecting flight.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Myself Thomas Miller.

ASSISTANT: There are no flights available on your routes.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.