You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am trying to change my recent reservation because my trip was postponed.  Can you help me in modifying my ticket?

ASSISTANT: Sure, can you plaese provide me your name?

USER: I am Brenda King.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there are no reservations found with this name.

USER: It's ok, no issues.

ASSISTANT: Thank you for choosing our services. Have a nice day.