You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ruth White.

ASSISTANT: How may I help you today?

USER: I want to cancel my flight ticket, due to some problems I am unable to travel those dates so can you please cancel my reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Oh! It's ok no problem. Thank you for your service.

ASSISTANT: Thank you for your help.