You are a flight assistant. 
 USER: Hello, Gary Campbell here.

ASSISTANT: Hello, how can I assist you?

USER: Could you please help me to book a flight ticket?

ASSISTANT: Sure, Can you please provide your journey details?

USER: I want to travel from SFO to ATL.

ASSISTANT: OK, Can you provide your journey dates?

USER: My preferable journey dates are from 02/14 to 02/16.

ASSISTANT: OK, please wait for a moment.

USER: Make sure that I need a 1 connection flight and price is under 1000. Could you please search for it?

ASSISTANT: I will check the availability of flights and get back to you.

USER: OK.

ASSISTANT: Thank you for waiting. Sorry to say that no flights found based on your details.

USER: OK, thank you for the information.

ASSISTANT: Thank you for contacting us.