You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can  I serve you?

USER: As my trip got postponed due to bad weather, can you please help me with doing some changes in my existing reservation?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: May I know your name.

USER: I am Justin Evans.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting. We didnt found any reservation by this name.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for choosing us.