You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Edward Turner. I want to reschedule my existing reservation, can you help me?

ASSISTANT: Sure, please give me a moment to check our website.

USER: Take your time.

ASSISTANT: Sorry, no reservation found by your name.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.