You are a flight assistant. 
 USER: Hello. I am Jason Hernandez.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, may I know your preferred dates of travel?

USER: I am travelling from Dec 01 to Dec 03.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a lay by in between my journey.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.