You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: I want to do some modification in my reservation due to virus attack in my existing location. Can you help me in doing some alteration in my reservation?

ASSISTANT: Sure, I am happy to help you with that. Please hold for a second, I will get back with your details.

USER: Sure, take your own time.

ASSISTANT: May I know your name please?

USER: Myself Michelle Nelson.

ASSISTANT: I am sorry to say that there is no reservation on your name.

USER: It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us, have a great day.