You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I had planned to go on a trip, but it was postponed. Can you change my recent reservation?

ASSISTANT: Sure, please mention your name to check your reservation details in our database.

USER: Ok, take your time. I am Amy Davis.

ASSISTANT: Sorry, I did not find any reservation by your name is our database.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us.