You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to attend a live concert at Denver, can you help me to book a flight ticket?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My trip dates are 08/16 and 08/18.

ASSISTANT: May I know your airport codes?

USER: My airport codes are ORD-DEN.

ASSISTANT: Do you have any requirements?

USER: I need direct flight.

ASSISTANT: I have found a direct flight 1002 at morning from your origin, can I proceed?

USER: Go ahead.

ASSISTANT: May I know your name?

USER: Elizabeth Gonzalez here.

ASSISTANT: Your booking is done, have a safe journey.

USER: Thank you.

ASSISTANT: Welcome.