You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I have reserved a flight ticket in the last month but now I am unable to travel because I am not feeling well. Can you please help me in cancelling the ticket?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name please.

USER: Sure, my name is Mary White.

ASSISTANT: Mary White, we couldn't find any reservation under your name in our database.

USER: I have got the confirmation mail when I have reserved the ticket. Can you please recheck once?

ASSISTANT: Sure, I will recheck once again. Wait a moment please.

USER: Ok, please reply me as soon as possible because I am in hurry.

ASSISTANT: Sorry White, we couldn't find any reservation under your name in our database.

USER: I will check my mail once and I will reach you again. Thank you for your help.

ASSISTANT: Thank you for approaching us.