You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: This is Sandra Robinson. I want to cancel my recent reservation. Can you help me in that?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.