You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER:  As my plan to watch a movie at orpheum theater got postponed, can you help me with changing my reservation please?

ASSISTANT: Sure, may I know your name to check the reservation?

USER: My name is Edward Thomas.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform, we didn't find your reservation in our database.

USER: That's ok. Thank you.

ASSISTANT: Thank you for choosing us.