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

ASSISTANT: Hello, how can I aid you today?

USER: Please book a flight ticket to SFO from LGA as I want to attend a storytelling festival.

ASSISTANT: Sure, when are you planning to start and return on?

USER: I have planned to travel on May 13 and return back on May 15.

ASSISTANT: Do you need a stopover flight?

USER: I need a stopover in between my journey.

ASSISTANT: Do you have any other requirements?

USER: I want to depart in the afternoon.

ASSISTANT: Thank you for your information, there are no flights found with the given information.

USER: Not an issue, thank you for the information.