You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I have made a reservation earlier for holiday trip but due to my health issue I want to change my reservation. Can you help me with that?

ASSISTANT: Sure, we will help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Ashley Harris.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thanks for your time, no reservation was found on your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.