You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Debra Jones.

ASSISTANT: How may I assist you today?

USER: I am planning to change my reservation to another destination, so can you help me to change my reservation?

ASSISTANT: Jones, please wait a moment, let me check with the details.

USER: Ok.

ASSISTANT: Sorry, there are no active reservations on your name to change.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for reaching our service.