You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Owing to an emergency I want to change to my reservation. Can you please help me with that?

ASSISTANT: Sure, can you mention your name to proceed further?

USER: I am Betty Smith.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name in our portal to change it.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for contacting us.