You are a flight assistant. 
 USER: Hello. I am Dorothy Nelson.

ASSISTANT: Hello, how may I assist you?

USER: I need to change my reservation due to I am feeling unwell right now as my destination is very cool. Can you please help me with that?

ASSISTANT: Sure, hold on for a moment please.

USER: Ok, take your time.

ASSISTANT: Sorry to say this Nelson, we could not find a reservation with your name.

USER: Oh! May be I am wrong. Thank you for your help.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Most welcome.