You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: Can you help me with the flight ticket modification which I had done last month?

ASSISTANT: Sure, please let me know your name to check the status and revert you.

USER: Sure, I am Samantha Davis.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found by your name in our data base.

USER: Thank you for your information.

ASSISTANT: Thank you for choosing us.