You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I have to cancel my reservation due to my planned leaves got cancelled. So please help me with cancelling my reservation.

ASSISTANT: Sure, will you mention your name for checking the reservation status?

USER: Thank you. I have reserved my ticket under my name Ruth Thompson.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting. There is no reservation found under your name.

USER: I will check my mail once again and  I will contact you again if anything not cleared. Anyway, thank you for checking.

ASSISTANT: Welcome, have a great day.