You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me to book flight ticket from JFK to PHX?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My planned dates to travel are Aug 9 and return on Aug 11.

ASSISTANT: Do you need any stopover in between your journey?

USER: I need a direct flight for this trip.

ASSISTANT: Do you have any specifications?

USER: I do not require any other specifications.

ASSISTANT: May I know your good name?

USER: I am John Thompson.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.