You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in changing my recent reservation? As I'm feeling sick.

ASSISTANT: Sure, may I know your name please?

USER: Sure, my name is Timothy Mitchell.

ASSISTANT: Ok, please wait for a moment, I will check and get back to you.

USER: Sure, I'll wait for your response.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: Oh! May be I have done a wrong booking. Thank you anyways.

ASSISTANT: Thank you.