You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please assist me for booking a flight ticket to PHX from EWR?

ASSISTANT: Sure, to book a ticket may I know when would you like to travel?

USER: My travelling dates are on May 21 and 23.

ASSISTANT: Do you prefer either connecting flight or direct flight?

USER: I need a connected flight.

ASSISTANT: Please provide your name.

USER: My name is Jeffrey Johnson.

ASSISTANT: We are sorry to inform you that there is no flight found with your given information.

USER: Ok, thank you.

ASSISTANT: Thank you.