You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Rachel Adams. Can you please help me in changing my recent reservation?

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

USER: Thank you. Sure, I will wait.

ASSISTANT: Sorry to say you, I did not find any reservation under your name in our database.

USER: No issues, thank you.

ASSISTANT: You are welcome and thank you for reaching us.