You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: Can you please help me to cancel my recent reservation due to my exam got cancelled?

ASSISTANT: Sure, I can help you. Please wait a while.

USER: Ok, you can check by this name Emma Miller.

ASSISTANT: OK. We didn't found any reservation by this name.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for choosing us.