You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Timothy Johnson here.

ASSISTANT: Nice to meet you.

USER: I would like cancel my recent reservation because of some personal work, can you help me?

ASSISTANT: Sure, please give me a moment.

USER: Ok, take your own time.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: It's ok , thanks for your information and help.

ASSISTANT: Welcome, have a great day.