You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: Robert Parker here. Can you book me a ticket from IAD to DFW?

ASSISTANT: Can I know your preferable dates?

USER: Ok, here are my preferred travelling dates 01/19 and 01/21.

ASSISTANT: I found 1002 of Spirit airlines matches with your preferences, can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you.