You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you?

USER: I am Rebecca Garcia. I need to book a ticket to meet my friend on an event which is organised by parents but I should be volunteer that event. Can you please book me a ticket with the fare of 500?

ASSISTANT: Ok. May I know your travelling dates?

USER: I would like to move on 06/22 and return on 06/24.

ASSISTANT: Can you share me your airport codes?

USER: My airport codes are from DEN to EWR.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: There is a flight 1012 in UA airline and price 200 with a connection. Shall I proceed?

USER: Ok, please book this ticket.

ASSISTANT: Reservation is done.

USER: Thank you.

ASSISTANT: Thank you.