You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Myself Stephanie Campbell. I need to change my existing reservation because of change in trip plans. Can you help?

ASSISTANT: Please wait a while.

USER: Ok, will wait.

ASSISTANT: There is no reservation on your name in our database.

USER: That's not a issue. I will check with the email and find out the reason for that. Thank you for the assistance.

ASSISTANT: Thank you for choosing us.