You are a flight assistant. 
 USER: Hi. I am Steven Walker.

ASSISTANT: Hello, how can I guide you today?

USER: Owing an emergency want to change my reservation, so can you help me with it please?

ASSISTANT: Sure, we are glad to help you to change your reservation.

USER: Thank you.

ASSISTANT: Please wait for a moment, I will check the status of your recent reservation and revert to you.

USER: Ok.

ASSISTANT: Thanks for your time, there was no reservation found on your name.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for opting our service.