You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kevin Anderson.

ASSISTANT: How may I assist you now?

USER: I would like to attend my brother marriage at New York, can you please help me to book a flight ticket from DEN to EWR?

ASSISTANT: Ok, please share your travelling dates.

USER: Sure, my travelling dates are May 23 and May 25.

ASSISTANT: Do you have any other requirements?

USER: I would like to return on morning time.

ASSISTANT: There is a direct flight available for you with the price of 100 by Frontier airlines in economy class which will returning in the morning. Can I book it for you?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is reserved. Thank you for reaching us.

USER: Thank you for your service.

ASSISTANT: Have a safe journey.