You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I render you today?

USER: Can you reserve me a ticket from DCA to CLT?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My journey dates are Mar 15 to 17.

ASSISTANT: Ok, do you have any specifications?

USER: I need a connecting flight in economy class.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Ok.

ASSISTANT: I found a flight for you with American Airlines and it costs you 100. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: On whose name you would like to book this ticket?

USER: Justin Williams here.

ASSISTANT: Your ticket has been booked with 1003 flight number.

USER: Thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.