You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Rachael Martin.

ASSISTANT: Martin, how may I help you?

USER: Can you please help me with changing my reservation?

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

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation is found.

USER: Oh! It's ok fine. Anyway, thank you for your time.

ASSISTANT: Thank you for choosing us.