You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER:  I want to change my reservation due to heavy snow storm. Can you please change my reservation with name Ronald Lewis?

ASSISTANT: Sure, please stand by I will get back to you.

USER: Ok.

ASSISTANT: Thanks for your time, sorry to say no reservation found on your name.

USER: Thank you for your response.

ASSISTANT: Thank you for reaching us, have a nice day.