You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Andrew Robinson.

ASSISTANT: Nice to meet you Andrew.

USER: I just want to cancel my recent reservation due to some problem. Can you help me out?

ASSISTANT: Give a minute?

USER: Ok.

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

USER: Thank you for quick response.

ASSISTANT: Thank you.