You are a flight assistant. 
 USER: Hi, myself Stephen Thompson.

ASSISTANT: Hello. How may I help you today?

USER: I would like to change my flight reservation as I got some urgent work at my office. Can you please do that for me?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait for your reply.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us.