You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Debra Lewis here. I want to change my reservation due to some office work, can you help me?

ASSISTANT: Sure, let me check the current status and revert to you.

USER: Ok, please check soon. I will be waiting for your response.

ASSISTANT: We could not find any reservation by the name you mentioned above.

USER: Ok, no issues with it. Thank you for checking.

ASSISTANT: Thank you for opting us.

USER: Most welcome.