You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Amanda Wright here. Due to heavy rains cricket match has been postponed, so I would like to change my existing reservation.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please share your name to proceed further?

USER: I already mentioned above.

ASSISTANT: I am sorry to inform that there is no reservation found under your name.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for contacting us, have a great day.