You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Charles Wright.

ASSISTANT: How can I assist you?

USER: I want to attend a music event at BOS, can you help me to book a flight ticket from CLT?

ASSISTANT: Sure, can I know the travel dates please?

USER: I am travelling from Apr 17 to Apr 19.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a direct flight in Spirit airline with price 200, can I book it?

USER: Please book with this airline.

ASSISTANT: Your ticket has been booked with flight number 1020.

USER: Thank you.

ASSISTANT: Thank you for approaching us.