You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amy Clark.

ASSISTANT: Amy Clark, how may I aid you?

USER: I want to cancel my reservation, can you please help me?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation is available by your name.

USER: Ok, thank you for informing me.

ASSISTANT: Thank you for reaching us.