You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Matthew Roberts here. I want to travel from EWR to DTW for a business trip, can you please check is there any flights available between those locations?

ASSISTANT: Sure, may I know your trip dates please?

USER: Thank you, my departure is on Mar 09 and please book my return ticket also on Mar 11.

ASSISTANT: Do you have any other requirements?

USER: I would like to departure and return at the time of afternoon.

ASSISTANT: Ok, do you have any class preference?

USER: No.

ASSISTANT: Sorry, there is no flight available as per your request.

USER: Oh! Sad to heat that. Anyway, thank you for the information.

ASSISTANT: My pleasure.