You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you now?

USER: Last night I met with an accident, so doctor advised me to take rest for a week days. Will you help me to change my existing reservation?

ASSISTANT: Sure, I am ravish to help you.

USER: Thanks.

ASSISTANT: Please share me your name to proceed further.

USER: My name is Scott Lewis.

ASSISTANT: Thanks for your name, wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found on your name in our database.

USER: No issues, thank you.

ASSISTANT: Thank you for availing us.