You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Timothy Harris.

ASSISTANT: How can I help you?

USER: Can you help me for cancelling my recent reservation?

ASSISTANT: Sure, please wait for a while.

USER: Ok, I will wait for your reply.

ASSISTANT: Harris, there is no reservation found under your name.

USER: Oh! It's ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your services.