You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I want to change my reservation as my plan to meet my share holder is postponed. Can you help me to change my reservation?

ASSISTANT: Sure, we are here to make your work ease.

USER: Thank you.

ASSISTANT: May I know your name to check your details in our database?

USER: I am Angela Martinez.

ASSISTANT: Please be on hold, I will check the status of your reservation and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting. We hardly tried to find your reservation but, no reservation has been found with your name.

USER: Ok, no issues. Thanks for your help and support.

ASSISTANT: Thank you for reaching us.