You are a flight assistant. 
 USER: Hello, I am Raymond Williams.

ASSISTANT: Hello, how best can I render you?

USER:  I want to enter into the Marketing business field, So I want to attend Marketing and Business Development Conference in Detroit, MI - DTW. Can you help me with booking a connecting flight?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are from 10/26 to 10/28.

ASSISTANT: Can you please share your source point?

USER: My source code is NC - CLT.

ASSISTANT: Kindly mention your price limit?

USER: My price limit is 200.

ASSISTANT: Ok, please wait a moment.

USER: OK.

ASSISTANT: Sorry, there is a flight with price 400.

USER: No do not proceed.

ASSISTANT: Ok.

USER: Thank you for the information.

ASSISTANT: Thank you.