You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: May I know your travel dates?

USER: My travelling dates are from Apr 21-23.

ASSISTANT: Do you have any connection preferences?

USER: I prefer to fly in connected flight.

ASSISTANT: May I know your name please?

USER: Jacob Hernandez here.

ASSISTANT: Is there any other concern?

USER: No, I am comfortable with any flight.

ASSISTANT: No flights found as per your preferences.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for the help.