You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: Sure, I am here to help you cancel that reservation but I need your name to check the reservation details.

USER: Myself Thomas Brown.

ASSISTANT: Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Sorry Thomas, I could not find any reservation with your name in our database.

USER: No problem, thanks for checking.

ASSISTANT: Most welcome, thanks for reaching us.