You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Betty Carter.

ASSISTANT: Betty, how may I render you?

USER: Can you help me to cancel my recent reservation because of some personal work?

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

USER: Sure, take your own time.

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

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for reaching us.