You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Clark.

ASSISTANT: How can I help you for today?

USER: I want to book a flight ticket, can you help me?

ASSISTANT: Yes, I can help you with that. Please provide the travelling details?

USER: I want to go from DC-IAD to AZ-PHX.

ASSISTANT: What are your preferable dates for travelling?

USER: My preferable dates are 07/04 to 07/06.

ASSISTANT: I found a flight at price 100 with one connection. Would you want me to confirm your ticket?

USER: OK, you can proceed.

ASSISTANT: Your ticket has been booked successfully with Hawaiian airline. Have a safe journey.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.