You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me in changing my recent reservation? As my health is not in good position.

ASSISTANT: May I know your name?

USER: Yes, my name is Shirley Lewis.

ASSISTANT: Ok. I did not find any reservation on your name to change.

USER: Oh! May be I did a wrong booking. Thank you anyways.

ASSISTANT: Thank you for reaching us.