You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Rachel Thompson. I want to change my existing reservation, due to financial problem. Can you help me in my changing reservation?

ASSISTANT: Sure, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting, there is no active reservation on your given name.

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

ASSISTANT: Thank you for opting us.