You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I need to change my recent ticket, can you please help me to change the travel dates in the ticket?

ASSISTANT: Sure, may I know your name?

USER: Thank you. My name is Cynthia Mitchell.

ASSISTANT: Wait a minute.

USER: Ok, take your time.

ASSISTANT: We could not find any reservation on your name.

USER: Oh! It is sad to hear from your end. Anyways thank you for checking my ticket status and for the information.

ASSISTANT: Thank you for choosing us.