You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Deborah Collins.

ASSISTANT: How may I help you?

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

ASSISTANT: Deborah Collins, please give me a moment.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there is no active reservation found by your name.

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

ASSISTANT: Thank you for choosing our services. Have a great day.