You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Actually my GRE examination is postponed so that I want to cancel my recent reservation, can you help me?

ASSISTANT: Sure, I will help you for that. I found your reservation and I cancelled it. Anything else to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Yes, I am Daniel Lopez.

ASSISTANT: Lopez, thank you for reaching us.

USER: No, thank you for your help.