You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I provide assistance for you?

USER: Due to some health issue, I need to change my recent reservation that I made earlier to go for an adventure. Can you please change it?

ASSISTANT: Sure, I am here to help you. Please let me know your name to check your reservation status?

USER: I am Patrick Garcia.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found on your name.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.