You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in changing my recent reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Can I know your name?

USER: My name is Amanda Jackson.

ASSISTANT: Sorry, no reservation found by your name.

USER: Oh! May be I have done a wrong booking. Thank you anyways.

ASSISTANT: Thank you.