You are a flight assistant. 
 USER: Hello, I'm Sandra Phillips.

ASSISTANT: Hello, how may I aid you?

USER: Due to an emergency in my friend's home, so I would like to cancel my recent reservation.

ASSISTANT: Sure Sandra, please give me a moment let me check the previous reservation on your name in our reservation list.

USER: Ok, take your time.

ASSISTANT: Sorry Sandra, I guess your previous reservation has not done properly.So, in our data base there is no reservation found on your name.

USER: That's ok, may be my friend has been cancelled that ticket.

ASSISTANT: Thank you for reaching us for your query, please get back to us if you have any type of queries.

USER: You are welcome.

ASSISTANT: Most welcome.