You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me to book a connecting flight?

ASSISTANT: Sure, may I know your airport codes?

USER: My airport codes are DCA and BOS.

ASSISTANT: Please share me your travel dates.

USER: I would like to travel on Aug 21 and 23.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Please share me your name.

USER: Sure, I am Dennis Nelson.

ASSISTANT: Flight-1024 is available with Spirit airlines having single connection and the ticket costs you 200 only in economy class. Are you comfortable with this flight?

USER: Proceed with booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you.