You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I want to cancel my ticket booking due to some health issues, can you help me?

ASSISTANT: Sure, I will help you with that, may I know your name please?

USER: Sure, I had booked the ticket on my name Pamela Davis.

ASSISTANT: David, please hold on for a moment to check your reservation status.

USER: Sure.

ASSISTANT: David, I did not find any reservation with your name in my database.

USER: Oh! Ok, I informed to my friend to cancel it, I think he might have done that. Anyways, thank you for your immediate response.

ASSISTANT: Ok, thank you for reaching us.

USER: Welcome.