You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Carol Taylor here.

ASSISTANT: How can I help you at this moment?

USER: I would to like to change my reservation due to financial issues.

ASSISTANT: Sure, I will help you with that.

USER: Sure, I will wait.

ASSISTANT: There is no previous reservation available in your name Carol Taylor.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: You are welcome.