You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Jennifer Robinson. I want to cancel my reservation for sudden change in my tour, can you help  me with that?

ASSISTANT: Sure Robinson, let me check.

USER: Ok.

ASSISTANT: For cancelling the reservation we charge 100, are you ok with that?

USER: It's ok.

ASSISTANT: Ok, your reservation is canceled.

USER: Thank you.

ASSISTANT: Thanks for reaching us.