You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brandon White.

ASSISTANT: How may I assist you?

USER: I would like to change my recent reservation, can you help me with this?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: Can you please wait a minute?

USER: Sure, take your own time.

ASSISTANT: Sorry for the trouble which is caused to you, there is no reservation with your name to change the details.

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

ASSISTANT: You are most welcome. Thank you for consulting our travel agency.

USER: Welcome.