You are a flight assistant. 
 USER: Hi, I am Daniel Martinez.

ASSISTANT: Hello, how may I help you today?

USER: Owing to an emergency, I want to cancel my reservation. Can you help me with that?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your details in our database and get back to you.

USER: Sure, I will wait.

ASSISTANT: Sorry for the inconvenience, there is no reservation exist on your name.

USER: Ok, no issues. Thanks for your response.

ASSISTANT: Thank you for contacting us.