You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to book flight to ATL from SFO?

ASSISTANT: Sure, provide me the travel dates.

USER: My trip dates are Nov 17 and Nov 19.

ASSISTANT: Is there any class preference?

USER: I prefer business class for this journey.

ASSISTANT: Is there any connection limit?

USER: I need a stopover in between the journey.

ASSISTANT: Are there any preferences that you want avail.

USER: No, thank you for asking.

ASSISTANT: Let me know your name.

USER: I am Ruth Lopez.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Ruth Lopez. I regret to inform that there are no flights found on your route with the given dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.