You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Barbara baker.

ASSISTANT: How may I render you at this moment?

USER: Unfortunately I have impotent meeting in my office so I want to attend that meeting, can you please help me to cancel my reservation?

ASSISTANT: Sure, please wait for few minutes.

USER: Ok.

ASSISTANT: There is no recent reservation found on your name in our records.

USER: Ok, no problem.

ASSISTANT: Thank you for availing us.

USER: Thank you.