You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: Can you please help me to change me existing reservation which I have done recently?

ASSISTANT: Sure, may I know your good name please?

USER: My name is Catherine Parker.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: There is no recent reservation found on your name in our records.

USER: Never mind, thank you for your time.

ASSISTANT: Thank you for reaching us.