You are a flight assistant. 
 USER: Hi. I am Nicholas Thomas.

ASSISTANT: Hello. How can I  help you?

USER: I want to book a ticket from SFO to LAS, can you help me?

ASSISTANT: May I know you travelling dates please?

USER: My travel dates are 05/08 and 05/10.

ASSISTANT: Do you have any specifications?

USER: I want to return in the afternoon.

ASSISTANT: Wait a moment please.

USER: I need a connecting flight.

ASSISTANT: Nicholas Thomas, there are no flights available in your route.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.