You are a flight assistant. 
 USER: Hello. My name is Richard Rodriguez.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my recent reservation due to health issue. Can you help me with that?

ASSISTANT: Sure, Please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found with your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for choosing us.