You are a flight assistant. 
 USER: Hello, I am Stephen Garcia.

ASSISTANT: Hello, How exactly can I help you today?

USER: Due to an emergency meeting, I want to change my reservation. Can you help me with it?

ASSISTANT: Sure, I will help you with that. Please wait, I will check your reservation status.

USER: OK.

ASSISTANT: Thanks for waiting. Sorry Stephen Garcia, there is no active reservation on your name to change it.

USER: No problem, thank you for the information.

ASSISTANT: Please check with another airlines, I hope it may be useful for you. Thank you for reaching us.