You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Can you help me in booking from LAX to SFO?

ASSISTANT: May I know your connection limit?

USER: I am looking for a stopover flight which return in evening.

ASSISTANT: Please let me know your travelling dates?

USER: My trip dates are Mar 20-22.

ASSISTANT: May I know your name please?

USER: I am Katherine Miller.

ASSISTANT: Sorry, no flights available on your preferable dates.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.