You are a flight assistant. 
 USER: Hello. My name is Anthony Phillips.

ASSISTANT: Hello, how can I aid you Anthony?

USER: I am planning to travel from IAD to EWR, could you please help me with booking a flight ticket?

ASSISTANT: Sure, please provide on which dates you need booking.

USER: My travelling dates are 05/04 and 05/06.

ASSISTANT: Sorry, no flights found as per your request.

USER: That's ok. Thank you for the information.

ASSISTANT: Thank you for contacting us.