You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you now?

USER: Could you please book a ticket with a direct flight to Phoenix?

ASSISTANT: Sure, I will help you with booking.

USER: Thank you.

ASSISTANT: Please share me your planned journey dates?

USER: I have planned to travel on May 10 and return on may 12.

ASSISTANT: May I know your source airport code?

USER: My source is from JFK.

ASSISTANT: Do you have any other requirement?

USER: No.

ASSISTANT: May I know your good name?

USER: My name is Mark King.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey dates.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for reaching us, we hope see you again.