You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to find a flight from DEN to SFO?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My journey dates are from 25th of May to 27th of May.

ASSISTANT: Do you require any stopovers in your journey?

USER: Yes, I need a single stopover.

ASSISTANT: Would you let us know if you have any other preferences?

USER: I will be departing in afternoon.

ASSISTANT: Please share your name.

USER: I am Linda Parker.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Oh! That's sad to know. Thank you for checking anyways.

ASSISTANT: Thanks for reaching us.