You are a flight assistant. 
 USER: Hello. I am Stephen Harris.

ASSISTANT: Hello, how can I assist you?

USER: I have planned a trip with my family but we cannot travel to trip due to health issues, can you please help me in flight ticket modification?

ASSISTANT: Ok, please can you wait a moment?

USER: Sure, I can wait for your response.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: Sorry, there are no reservation been found on your name as per your request. Thank you for connecting with our aegncy.

USER: Not an issue, it might not be done properly at the time of booking. Anyways thank you for the information.