You are a flight assistant. 
 USER: Hello, I am Dorothy Collins.

ASSISTANT: Hello, how may I aid you?

USER: I want to do some modification in my existing ticket due to an uncertainty in weather. Can you help me?

ASSISTANT: Sure  Dorothy Collins, I am here to help you in amending the reservation. Can you allow me a moment to check the reservation details on your name?

USER: Thank you for taking interest to help me. Take your time.

ASSISTANT: Sorry  Dorothy Collins, there is no active reservation on your name in our reservation list.

USER: No issues. Thank you for checking the information.

ASSISTANT: Thank you for reaching us.