You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: We are planning for a  trip with my neighbours to New York NY-EWR. Could you help me with booking?

ASSISTANT: Sure, kindly mention your travel dates?

USER: I would like to fly on 07/23 to 07/25.

ASSISTANT: Can you please provide me your airport code?

USER: My source code is NY-JFK.

ASSISTANT: May I know your name? Ok, please wait a moment.

USER: I am Joseph Davis.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Ok, no problem.

ASSISTANT: Thanks for reaching us.

USER: Thank you.