You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, may I know your name?

USER: Yes, my name is Rachel Taylor.

ASSISTANT: There is no reservation on your name.

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

ASSISTANT: Ok.

USER: Thank you for giving the information anyways.

ASSISTANT: Thank you.