You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Nicholas Garcia. I want to change my recent reservation, due to health issue. Can you help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait for a moment.

USER: Sure.

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

USER: Not an issue. Thank you for your quick response.

ASSISTANT: Thanks for approaching us.