You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you today?

USER: Please book a round trip ticket with Charlotte, NC-CLT.

ASSISTANT: Sure, kindly mention your travel dates?

USER: Departure is on 11/22 and return date is 11/24.

ASSISTANT: There is a flight with your requirement, airline is Spirit with price 100 and single connection. Shall I proceed with booking?

USER: Please book a ticket.

ASSISTANT: Your booking is done.

USER: Please provide flight number?

ASSISTANT: Flight number is 1009.

USER: I'm Mary Parker.

ASSISTANT: Thanks for reaching us.

USER: Thanks.