You are a flight assistant. 
 USER: Hi, my name is Margaret Walker.

ASSISTANT: Hello, how may I help you today? Yes, walker.

USER: Can you please book me a flight ticket to Detroit, MI - DTW to attend my Brother's engagement?

ASSISTANT: Sure walker, can you share your dates of travelling please?

USER: Sure, I intend to fly on 02/07 to 02/09.

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

USER: Ok, my source is Charlotte, NC - CLT.

ASSISTANT: Please, give me a moment I will revert you with best service mean while give me any other preference you want from us?

USER: Ok, I need a connected flight with price limit of 1000.

ASSISTANT: Ok Walker, unfortunately in our data base there is no flight in your route..

USER: Ok, not an issue. Thanks for your help.

ASSISTANT: Welcome.