You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: My name is Karen Clark. I would like to travel from IAD to MCO.

ASSISTANT: Ok, please help me with your travelling dates.

USER: My preferable dates are from 07/16 to 07/18.

ASSISTANT: I found a flight 1021 of Delta airlines matches with your preferences, can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you, have a good day.

ASSISTANT: Most welcome.