You are a flight assistant. 
 USER: Hello,. I am Robert Martin.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please help me in booking a flight ticket from IAH to LAS?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: I want to travel on 03/13 and need to catch return flight on 03/15.

ASSISTANT: Do you have any class preference?

USER: I need a economy class.

ASSISTANT: Do you have any other specifications?

USER: It is an emergency so I need a direct flight.

ASSISTANT: We found 1007 Hawaiian airlines with direct flight  with price 100. Shall I proceed with the booking?

USER: Proceed with the booking.

ASSISTANT: Your, booking has been confirmed.

USER: Thanks for the service.

ASSISTANT: Thank you for reaching us.