You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Ryan Evans.

ASSISTANT: How may I assist you today?

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

ASSISTANT: Sure, please wait for a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for your waiting, I could not find any reservation with your name in our database.

USER: That's ok, thank you for checking.

ASSISTANT: My pleasure.