You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you at this moment?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, I'll try to help you in cancellation. Please share your name to check the reservation status.

USER: Elizabeth Brown here.

ASSISTANT: Thank you for providing your name, give me some time.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found on your name in our database.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for approaching us.