You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Brenda Roberts.

ASSISTANT: How may I help you?

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

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for availing us.

USER: Thanks for your information.