You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Debra Thomas here.

ASSISTANT: How may I guide you?

USER: I would like to change my reservation due to some issues, can you please help me in that?

ASSISTANT: Sure, I am here to help you. Let me check your reservation status in our database.

USER: Ok, I will wait for your response.

ASSISTANT: Debra sorry to intimate, no reservation is found on your name in our database.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are welcome.