You are a flight assistant. 
 USER: Hello, I am Linda Phillips.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket to New York for my brother's wedding, please help me in booking from 09/04 to 09/06.

ASSISTANT: Sure, we are here to help you. Please share your codes of the airport.

USER: My journey is from IAD to EWR.

ASSISTANT: Please share your specifications.

USER: I need a direct flight.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.