You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Donna Walker.

ASSISTANT: How may I guide you today?

USER: I need to cancel my recent reservation, can you please help me out?

ASSISTANT: Sure, I will help you with that.

USER: Thank you for accepting.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Not an issue, thank you searching the details.

ASSISTANT: Thank you for contacting us.