You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help is required from our agency?

USER: Our agency has been booked a ticket with wrong dates. Can you please help me for changing the existing reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you for your response.

ASSISTANT: May I know your name please to check the reservation status?

USER: Sure, my previous reservation is in the name of Jason Collins.

ASSISTANT: Sorry for inconvenience Jason, there is no reservation found on your name.

USER: No problem, I will search with another agency to complete my trip.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your service.