You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Hello, how can I help you?

USER: I am very busy with my meetings, so I am not able to complete my trip. Can you please help me in changing my existing reservation?

ASSISTANT: Sure, I am here to help you. Please share your name.

USER: My name is Emily Hill.

ASSISTANT: Ok, wait a minute please.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry no reservation found on your name.

USER: Ok, no issues. Thank you.

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