You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, will you mention your name for checking the reservation status?

USER: Sure, my name is Samuel Brown here.

ASSISTANT: Please give me a moment.

USER: Sure, I will wait.

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

USER: Ok, not an issue.Thank you for your information.

ASSISTANT: Welcome, have a great day.