You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Will you please book me a direct flight to New York?

ASSISTANT: Sure, can you please share me your airport codes?

USER: I will leave from IAD and arrive at JFK.

ASSISTANT: May I know your planned trip dates?

USER: My departure is on July 16 and arrival is on July 18.

ASSISTANT: Please provide me your requirements.

USER: I am fine with above essentials.

ASSISTANT: Unfortunately there is no flight found with your given information.

USER: That's alright, thanks for your assistance. By the way I am George Brown.

ASSISTANT: Thank you for choosing us.