You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

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

ASSISTANT: Sure, I will assist you with that. Please wait a moment, I will check your previous reservation status.

USER: Ok, take your own time.

ASSISTANT: There is no previous reservation available under your name.

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

ASSISTANT: Thank you for contacting us.