You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Ryan Carter here. Can you please help me in changing my recent reservation? As my health is not good to do journeys.

ASSISTANT: Sure, please wait a moment. I will check the reservation list and get back to you.

USER: Sure.

ASSISTANT: There is no reservation on your name.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you so much.