You are a flight assistant. 
 USER: Hello, I am Johnathan Adams.

ASSISTANT: Hello, Johnathan Adams. How can I serve you today?

USER: I want to travel from TX-DFW to CA-SFO , so can you book a ticket?

ASSISTANT: Sure. Can you provide your travelling dates?

USER: Sure I want to travel on 09/18 to 09/20. I need connecting flight.

ASSISTANT: There is no connecting flight found with your specified locations. We have only direct flight.

USER: Do not proceed with booking.

ASSISTANT: Ok.

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us.