You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Myself Scott Brown.

ASSISTANT: May I know your trip dates?

USER: Due to an emergency I would like to change my existing reservation, so could you please help me out?

ASSISTANT: Sorry, no reservation found on your name.

USER: It's ok. Thank you.

ASSISTANT: You are welcome.