You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: My name is Raymond Allen and I would like to head from Charlotte, NC - CLT  on 11/25 to New York, NY - EWR to attend my friend's son birthday.

ASSISTANT: Ok, kindly provide me your return date?

USER: Sure, it is on 11/27.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry for the in convince no flight found with your requirement.

USER: Ok, thank you for your response.

ASSISTANT: Thanks for reaching us, have a good day.