You are a flight assistant. 
 USER: Hello, I am Samantha Walker.

ASSISTANT: Hello, how can I give assistance to you?

USER: Owing to an emergency I had to request for this cancel reservation.

ASSISTANT: Sure, we are glad to assist you with cancellation. Please wait for a while, to check the status of your reservation and get back to you.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for your time, we did not find any reservation on your name.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for choosing us.