You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: Samuel Jackson here.

ASSISTANT: Give me a minute, kindly.

USER: Sure, take your time.

ASSISTANT: Thank you for being waiting, we do not found any active reservation in your name to make changes further.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.