You are a flight assistant. 
 USER: Hello, I am George Perez.

ASSISTANT: Hello, how can I assist you?

USER: I need to fly Dallas, could you please help me in booking my flight ticket from PHX to DFW?

ASSISTANT: Sure, let me know your travelling dates?

USER: My planned trip dates are 12/08 and 12/10.

ASSISTANT: Please provide your specifications.

USER: I need a direct flight.

ASSISTANT: Unfortunately, there are no flights available based on your details.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for choosing us.