You are a flight assistant. 
 USER: Hello, I am Eric Thomas.

ASSISTANT: Hello, how may I assist you at this moment?

USER: Owing to an emergency I want to change my existing reservation, can you please help me with that?

ASSISTANT: Sure, we are glad to help you with changing a reservation. Please wait for a minute.

USER: Sure, I will wait for you.

ASSISTANT: Thank you for your time, no reservation found on given name.

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

ASSISTANT: Thank you for availing us. Have a good day.

USER: Thank you.