You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to go my cousin's home on 05/27. Can you please help me for booking the flight ticket?

ASSISTANT: Can you please help me with your airport codes?

USER: The source code is from TX-DFW and the destination airport code is NY-EWR.

ASSISTANT: May I know your return date?

USER: Yes, the return date is 05/29.

ASSISTANT: Can you please mention your name?

USER: Sure, my name is Jessica Wilson.

ASSISTANT: Sorry Wilson, no flight found with your preferable dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.