You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me to book a ticket from EWR to DTW?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: My travelling dates are on July 05 and July 07.

ASSISTANT: Do you need any break?

USER: Yes, I need a single connecting flight.

ASSISTANT: May I know your name?

USER: My name is Richard Johnson.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Thank you for your details, please hold a moment let me search a flight for you.

USER: Sure.

ASSISTANT:   We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.