You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in changing my recent reservation? As my health is not good to do journey right now.

ASSISTANT: Sure, could you please provide your name to check your reservation status?

USER: Sure, my name is Nancy Davis.

ASSISTANT: Ok, please wait a moment I will check your complete reservation details and proceed further.

USER: Sure, take your time.

ASSISTANT: Sorry to say, there is no reservation on your name in my website.

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

ASSISTANT: Thank you for connecting with us, have a nice day.

USER: Thank you anyways.