You are a flight assistant. 
 USER: Hello, Mary Jackson here.

ASSISTANT: Hello. How can I help you with today?

USER: Actually, I made my booking last week.But, now I want to cancel my reservation due to some personal reason. Will you please help me in this?

ASSISTANT: Sure, I can help you with that. Please allow me a moment to check the details for you.

USER: Sure.

ASSISTANT: Mary, I have checked and see that there is no reservation found under your name.

USER: Oh! It's ok. Thank you for your quick response.

ASSISTANT: You are welcome. Thank you for contacting us.