You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Smith.

ASSISTANT: How can I assist you today?

USER: I want to enjoy my holidays at PHX, can you please help me to book a flight from DFW?

ASSISTANT: Sure, I will aid you in booking, can you share me your preferable dates?

USER: Sure, my travelling dates are from Sept 18 to Sept 20.

ASSISTANT: Please wait for some time.

USER: Sure.

ASSISTANT: I found a flight with the price of 100 and one connection. Can I proceed with the booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket is confirmed in economy class.

USER: Thank you for the assistance.

ASSISTANT: Thank you for reaching us.