You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Nancy Mitchell.

ASSISTANT: How may I help you?

USER: I would like to travel from DCA to AUS, could you help me out.

ASSISTANT: Sur, please share your travel dates.

USER: My preferable dates are from 02/20 to 02/22.

ASSISTANT: I found a flight 1015 of Delta airlines matches with your preferences, can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is confirmed. Happy journey.

USER: Thank you.

ASSISTANT: Thank you for reaching us.