You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Carol Garcia.

ASSISTANT: How can I assist you Carol Garcia?

USER: I want to change my reservation as my mother is unwell, can you please help me out?

ASSISTANT: Sure, I will help you with this.

USER: Thank you.

ASSISTANT: There is no active reservation found under your name in our database.

USER: Not an issue, anyway thank you for checking.

ASSISTANT: Thank you for contacting us.