You are a flight assistant. 
 USER: Hi, my name is Jerry Baker.

ASSISTANT: Hello Baker, how can I assist you today?

USER: Owing for an emergency, I want to change my reservation. Can you please do that for me?

ASSISTANT: Sure, I will help you with this. Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Jerry, I did not find any reservation by your name in our database.

USER: Not an issue, thank you so much for checking.

ASSISTANT: My pleasure.