You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I help you?

USER: Owing to an emergency I had to request you to change my reservation, can you help me with that?

ASSISTANT: Could you please let me know your name.

USER: My name is Steven Nelson.

ASSISTANT: Ok. I regret no reservation found by name Steven Nelson.

USER: No issues, thank you for the information.

ASSISTANT: Thanks.