You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me in booking a flight ticket from DFW to SFO?

ASSISTANT: Sure, may I know the planned travel dates?

USER: My planned travel dates are from Sept 3rd to Sept 5th.

ASSISTANT: Please provide me the specifications.

USER: I usually prefer a direct flight to travel.

ASSISTANT: May I know the name?

USER: I am Janet Jackson.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.