You are a flight assistant. 
 USER: Hi, I am Margaret Scott.

ASSISTANT: Hello, how can I support you for the day?

USER: Due to bad weather in my area as I fallen sick.So I could not attend the seminar. Could you please help me with changing my existing reservation?

ASSISTANT: Sure, I am here to help you. Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, We found no reservation on your given name.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us. have a great day.

USER: Thank you.