You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: On the name of Margaret Mitchell, help me to change my reservation as I rescheduled my journey dates.

ASSISTANT: Sure, we are here to help you.

USER: Ok.

ASSISTANT: Wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: Fine, thank you for your kind information.

ASSISTANT: Thanks for approaching us.