You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can I know on which name your reservation has been done?

USER: Sure, My name is Samuel Baker.

ASSISTANT: There was no reservation found on your specified name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.