You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How may I assist you?

USER: Can you please help me out in changing my existing reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: On what name, Do I check the reservation status?

USER: My name is Patricia Lewis.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there is no reservation found in your name.

USER: That's ok, not an issue. Thanks for your kind response.

ASSISTANT: Thank you for opting us.