You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I have to change the travelling dates in the previous ticket because the final examination got postponed. Can you please help me to change the ticket details?

ASSISTANT: Sure, please share me your good name.

USER: Thank you. My name is Barbara Carter.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: Oh! I think the ticket is not booked properly. Anyhow thank you for checking my ticket status.

ASSISTANT: Thank you for opting us.

USER: You are welcome.