You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Jeffery Johnson, I want to book a flight to visit on Comic-Con. Can you book a direct flight?

ASSISTANT: Sure, can you please share your airport locations?

USER: I will fly from NY-LGA to CA-SFO.

ASSISTANT: Ok, kindly mention your dates of travelling?

USER: I will travel on 05/21 and return on 05/23.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for your time, sorry, no flights found on that route.

USER: Ok, thanks for the details.

ASSISTANT: Thank you for reaching us.