You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: James Lewis here. I want to cancel my reservation with AA airlines, due to unsatisfied service. Can you help me?

ASSISTANT: Ok, please wait for a while I will revert you back with the preferable information.

USER: Sure, take your time.

ASSISTANT: Sorry, I could not able to find any flight reserved with your name at this moment for the given schedule.

USER: Oh! That's sad to know, thank you for checking.

ASSISTANT: Thanks for contacting us.