You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you for the day?

USER: Please help me to book a flight ticket from IAH to JFK.

ASSISTANT: Sure, can you please let me know your travel dates?

USER: My trip dates are from Feb, 02 to Feb, 04.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight and in an economy class.

ASSISTANT: May I know your name?

USER: I am Edward King.

ASSISTANT: Sorry, there is no direct flight from IAH to JFK.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for contacting us.