You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best hep you now?

USER: I made a reservation earlier to go for a trip. Due to shortage of holidays it has been postponed. Can you please change my existing reservation?

ASSISTANT: Sure, that's what I am here. Can you please let me know your good name to track your details?

USER: My name is Shirley Nelson.

ASSISTANT: Just wait for some time.

USER: Sure.

ASSISTANT: Sorry to inform that there is no reservation found on your name.

USER: Ok, no issue.

ASSISTANT: Thanks for contacting us, wish you a great day.

USER: Thanks for your information.