You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I want to change my reservation due to health problem, can you help me?

ASSISTANT: Sure, can I know your name?

USER: Myself Eric Parker.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: No problem, thanks for checking.

ASSISTANT: Anyway thank you for contacting us.