You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Please book a ticket from Detroit, MI-DTW to New York, NY-EWR.

ASSISTANT: Sure, could you please share me with your dates of travel?

USER: Depart is by 05/28 and 05/30 is return date.

ASSISTANT: Ok, may I know your name please for further process?

USER: My name is Rebecca Baker.

ASSISTANT: Baker, there is a flight with the connecting flight of fare 900 and the airline is naming as Frontier, are you ok with this booking?

USER: Please do not book a flight.

ASSISTANT: Ok.

USER: Thanks.

ASSISTANT: You are welcome.