You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Betty Mitchell, can you help me to change my reservation?

ASSISTANT: Sure, I am here to help you, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, I could not find any reservation with your name.

USER: Ok, no issues with that. Thank you for your time.

ASSISTANT: Thanks for reaching us.