You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Can you help me to change my reservation due to some health issue, please help me with that.

ASSISTANT: Can you share me your name to proceed further?

USER: Myself Melissa King here.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: There is no reservation found with your name.

USER: No issue.

ASSISTANT: Thank you for approaching us.

USER: Thank you.