You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Ruth Evans.

ASSISTANT: Nice meeting you Ruth.

USER: Thank you, nice to meet you too. I want to cancel my flight ticket, due to some problems I am unable to travel those dates so please cancel my flight ticket?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found with your name in our records.

USER: Oh! it's ok no problem.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Thank you for your service.

ASSISTANT: Welcome.