You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency, I want to change my recent reservation. Can you help me out?

ASSISTANT: Sure, may I know your name?

USER: Sure, I am Rebecca Johnson.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: There is no reservations found on your name.

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

ASSISTANT: Thanks for choosing us.