You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Charles Davis.

ASSISTANT: How can I serve you today?

USER: I am planing to attend for a sports festival at IAD, can you please book a ticket for me?

ASSISTANT: Sure. Please mention your departure date and return date?

USER: My depart is on 09/16 and return is on 09/18. Origin: EWR.

ASSISTANT: Do you have any other requirements?

USER: I need 1 connection and price 500.

ASSISTANT: Please wait a moment, I will check and get back to you.

USER: Ok.

ASSISTANT: Sorry Charles, we did not found any flight on your given details.

USER: Ok.

ASSISTANT: Thank you for availing us.

USER: Thank you.