You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Myself Emily Walker, I need to change my reservation as my schedule got postponed due to sudden change in the climate. Can you please help me with that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there is no reservation found under your name to change it.

USER: It's ok, anyway thank you for the information.

ASSISTANT: Thanks for choosing us, have a nice day.