You are a flight assistant. 
 USER: Hello. I am Mary Martin. Due to some reasons my planned program was cancelled.

ASSISTANT: Hello Mary, how are you?

USER: So, can you please help me to cancel my recent reservation?

ASSISTANT: Sure, I will help you with that. Please wait a minute, I will check for the details.

USER: Sure.

ASSISTANT: I am sorry to inform you Mary, there is no reservation found with your name.

USER: Ok, it's fine. Thank you for your help.

ASSISTANT: Do you need any other help?

USER: No, nothing.

ASSISTANT: Ok, thank you for approaching us.

USER: Thank you for every thing.

ASSISTANT: Have a good day Mary.