You are a flight assistant. 
 USER: Hello, I am Edward Taylor.

ASSISTANT: Hello. How can I aid you?

USER: I want to book a ticket from ATL to SFO for visiting Alcatraz island. Can you help me in booking a ticket?

ASSISTANT: Sure, please provide me your journey dates?

USER: My journey dates are 06/04 to 06/06.

ASSISTANT: Do you have any other specifications?

USER: Yes, I want a direct flight.

ASSISTANT: Sorry, no flights are found on your scheduled dates.

USER: Ok, Thank you for your information.

ASSISTANT:  Thank you, have a nice day.