You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Mark Carter, I heard that there is an exhibition in DTW in the month of May but because of rush I may not get a flight ticket in that month. So, I need a advance booking of the flight for my journey from EWR. Can you please sort out my problem?

ASSISTANT: Sure, I am happy to help you with that. Could you please provide me your travel dates?

USER: Thank you for your positive response and my travel dates are 05/05 and 05/07.

ASSISTANT: Ok, please hold on for a minute while I am searching the flight.

USER: Ok, have your time and get me a connected flight for my journey.

ASSISTANT: Sorry for the trouble which is caused to you, when I have checked the flight availability I have not found any flight in this route.

USER: It's ok, anyway thank you for the information.

ASSISTANT: You are welcome, thank you for contacting us.