You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Welcome to Global flight booking service. How may I assist you today?

USER: I am looking for a flight from Detroit to Charlotte, can you find any flights available in this route?

ASSISTANT: Sure, on which dates you want flight?

USER: My journey dates would be 04/19 and 04/21.

ASSISTANT: Can I know your exactly airport of your travel location?

USER: The airport codes are DTW and CLT respectively. Also make sure the fare shouldn't exceed 200.

ASSISTANT: As per your request, I found a flight with airline UA and price 100. Can I make a reservation for you?

USER: Please confirm the ticket with the name Nicholas Green.

ASSISTANT: Your ticket has been booked successfully.

USER: Thank you for your service.

ASSISTANT: It's my pleasure. Have a safe journey.