You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in changing my reservation on the name Joshua Hernandez due to my illness?

ASSISTANT: Sure, we are here to help you. Wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: Ok, no issue.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your information.