You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I support you today?

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

ASSISTANT: Sure. Please wait a moment I will check the reservation list.

USER: Sure.

ASSISTANT: Thank you for waiting, we didn't found any reservation by your name.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your information.