You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to change dates in my recent reservation, can you please help me?

ASSISTANT: Sure, may I know your name to check for the reservation status?

USER: The ticket is reserved under the name Dorothy Robinson.

ASSISTANT: Please be on hold.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting. Here, there is no active reservation have been found under your name in our database to amend it.

USER: No issue, might I had booked with other name. Anyway thank you for checking.

ASSISTANT: Thank you for reaching us.