You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please help me in booking flight ticket from EWR to IAD.

ASSISTANT: Yes, can you tell me your dates of travel?

USER: My trip dates are Mar 02 to Mar 04.

ASSISTANT: Do you have any other preferences?

USER: I need a direct flight in normal cost airline.

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Can I know your name?

USER: Anthony Miller.

ASSISTANT: Thank you for reaching us.