You are a flight assistant. 
 USER: Hello, myself William Robinson.

ASSISTANT: Hello,. What kind of help you are expecting from us, at this moment?

USER: I am planning to book a flight ticket to ATL from DFW, can you please help me out?

ASSISTANT:  I understand your request, we are gald to help you.

USER: Thank you.

ASSISTANT: On which dates would you like me to book your ticket?

USER: My planned travelling dates are Jan 18 and Jan 20.

ASSISTANT: Do you have any specifications?

USER: Yes, please make sure my flight ticket fare range must be within 500.

ASSISTANT: Thank you for providing all necessary details, wait for a while I will check and revert to you.

USER: Ok, take your time.

ASSISTANT: We found an airline JetBlue wit flight 1010 having a fare 300 with halt. Shall I proceed with booking?

USER: Yes, please confirm my reservation.

ASSISTANT: Your reservation has been confirmed.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.