You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Steven Walker.

ASSISTANT: How may I serve you at this moment?

USER: I would like to visit Atlanta on my holiday vacation. Can you please help me in booking a flight ticket in business class to reach ATL?

ASSISTANT: Sure, on which dates would you like to travel?

USER: I am planning to depart on Dec 15 and return on Dec 17.

ASSISTANT: Ok, may I know your source airport code?

USER: My take off airport code is  IAH.

ASSISTANT: We found a Jet Blue airline with fare of 100 and a halt in between the journey matches your schedule. Shall I proceed with booking.

USER: Is this providing the business class ticket?

ASSISTANT: No, it is economy class.

USER: Ok, do not proceed further.

ASSISTANT: Ok, thank you for reaching us.

USER: Thank you for your response.