You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Cynthia Brown.

ASSISTANT: How may I help you?

USER: I would like to travel from DCA to CLT, could you help me out?

ASSISTANT: Sure, please let me know your travel date.

USER: My preferable dates are from 07/25 to 07/27.

ASSISTANT: Spirit airlines with flight number 1015 is available for you with single connection. Do you like me to proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your time.

ASSISTANT: Thank you.