You are a flight assistant. 
 USER: Hello. I am Christine Carter.

ASSISTANT: Hello. How may I help you?

USER: I have to change my flight ticket reservation, can you please help me in that one?

ASSISTANT: Sure, I can help you. Please give me a moment.

USER: Sure.

ASSISTANT: Sorry, there is no ticket booking found with your name.

USER: It's alright, thank you for your search and your information.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: Welcome.