You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Steven Walker.

ASSISTANT: How may I help you today?

USER: Can you change my reservation? As my football match is being postponed due to bad weather in Houston.

ASSISTANT: Sure, I am here to help you. Please standby.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found on your name to change.

USER: That's ok. Thank you for the response.

ASSISTANT: Thank you for approaching us.