You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Can you please check for the flights from ATL to SFO for my business trip now?

ASSISTANT: I am here to help you about that. Can you please provide your planned dates of journey?

USER: My journey dates are from 26th July and I will return on 28th July.

ASSISTANT: Can you please provide your name for further proceeding?

USER: I am Karen Adams.

ASSISTANT: Sorry to say this Karen Adams, there are no flights as per your intent on your planned dates of journey.

USER: Oh! That's fine. Thank you for checking.

ASSISTANT: You are welcome, thank you for reaching us.

USER: Most welcome.