You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Janet Thomas.

ASSISTANT: Janet, how may I aid you?

USER: Can you please help me in my flight ticket changing due to some work on my trip dates?

ASSISTANT: Sure, please give me a moment to check your ticket status.

USER: Sure.

ASSISTANT: Sorry, no reservation is available by your name.

USER: Ok, that's fine. Thank you for your searching and providing the information.

ASSISTANT: Thank you for contacting us.