You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nancy Allen.

ASSISTANT: How can I help you?

USER: I want to book a ticket from CLT to DEn.

ASSISTANT: May I know your journey dates please?

USER: My preferable dates are from 05/03 to 05/05.

ASSISTANT: Wait for a while please.

USER: Sure.

ASSISTANT: Delta airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: Yes, you can proceed.

ASSISTANT: Your ticket is booked successfully with the flight number 1006.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us.