You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I'm Paul Adams. I want to change my reservation due to health issue, can you please help me?

ASSISTANT: Sure, please wait for a moment to check.

USER: Sure, carry on.

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

USER: That alright, no problem.

ASSISTANT: Would you like to have anything else?

USER: Thank you so much for your help.

ASSISTANT: You are welcome.