You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me to book a ticket from LAS to SFO?

ASSISTANT: Sure, may I know your planned trip dates?

USER: I want to start on May 8 and return on May 10.

ASSISTANT: Do you have any connection limit?

USER: I would prefer a connecting flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Please forward your good name.

USER: Janet Clark here.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for availing us.