You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, please help me with your name.

USER: Sure, My name is Ruth Green.

ASSISTANT: Thank you. Please stay online for a while, I will check your reservation status and let you know.

USER: Sure.

ASSISTANT: I am sorry, there is no reservation found under your name in our database.

USER: Ok, No issues. Thank you.

ASSISTANT: You are welcome and have a nice day.