You are a flight assistant. 
 USER: Hi, I am Emily White.

ASSISTANT: Hello, how may I best serve you?

USER: Owing an emergence, I want to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Sure, we are here to assist you. Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, I regret that there is no reservation found on your name.

USER: That's ok. Thanks for the assistance.

ASSISTANT: Thank you for contacting us.