You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help do you require from our agency?

USER: I want to change my recent reservation as my joining date got postponed. Can you help me in changing?

ASSISTANT: Sure, I am happy to help you in changing your recent reservation details. Can I know your name please?

USER: Sure, my name is Jerry Edwards.

ASSISTANT: Nice name Jerry Edwards, can you please give me a minute? So that, I will check the ticket status.

USER: Sure, I will wait for your information.

ASSISTANT: Sorry to say that, I have not found any active reservation with your name in our database to change the ticket details.

USER: That's ok, no issues. Anyway thank you for checking.

ASSISTANT: You are welcome. Thank you for opting us.