You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you at this moment?

USER: I want to cancel recent reservation due to sudden change in my trip dates.

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

USER: Can you help me with that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you. I am Lisa Clark.

ASSISTANT: Please wait for few minutes.

USER: Sure.

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

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.