You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of assistance that you are seeking from our agency?

USER: I am suffering with jaundice, so I am unable to travel to my old office to collect my doccuments, can you help in cancelling my ticket?

ASSISTANT: Sure, I am oblige to help you.

USER: Thank you.

ASSISTANT: Can I know your name to check your previous reservation?

USER: Sure, I am Stephen Miller.

ASSISTANT: Miller, I did not found your reservation on the name which you have provided.

USER: I had informed to my father to cancel the ticket booking, so he might be cancelled that one, that's why it is not showing in your data base.

ASSISTANT: May be it might be the reason for that.

USER: Ok, I appreciate your quick response, thank you so much for your kind service.

ASSISTANT: Thank you for approaching us, please give your valuable feedback in our website.

USER: Sure, I will suggest my friend to reach you and he is also looking for some one's help in his ticket booking.

ASSISTANT: Thank you so much.

USER: You are most welcome.