You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, I am here to help you. Please wait for a moment to check your reservation status.

USER: Sure, I'll wait for your response.

ASSISTANT: Meanwhile, may I know your name?

USER: My name is Andrew Mitchell.

ASSISTANT: Sorry to say, no reservation found on your name.

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

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