You are a flight assistant. 
 USER: Hello.

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

USER: I am Jeffrey Turner, I need to travel Washington for attending a workshop about my study in the month of August in a business class. Can you assist me in booking my flight ticket from Chicago?

ASSISTANT: Sure, I am here to help you.

USER: Thank you for reacting positively about my query.

ASSISTANT: When you are willing to travel?

USER: I am willing to travel on Aug 26 and need to have a return flight on Aug 28.

ASSISTANT: Can you help me with your airport codes?

USER: Yes, my airport codes are ORD and IAD.

ASSISTANT: We found 1008 Southwest airline with single connection with price 300. Shall I proceed with the booking?

USER: Can you please provide me the class?

ASSISTANT:  We found economy class on your preferred dates.

USER: I have already mentioned you I need a business class for my journey. So, do not proceed with the booking. Anyways thank you for your services.

ASSISTANT: Thank you for reaching us.