You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Melissa Hall. I would like to travel from ORD to DCA, could you help me out?

ASSISTANT: May I know your desired travel dates please?

USER: My preferable dates are from 02/02 to 02/04.

ASSISTANT: I found a flight 1022 of UA airlines matches with your preferences, can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked.

USER: Thank you, have a good day.

ASSISTANT: Thank you for opting us.