You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to modify my reservation as I am not able to make a journey this time. So, can you help me in changing my reservation to some other time?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Ruth Nelson.

ASSISTANT: There was no reservation found on your name.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.