You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you today?

USER: Owing to an emergency, I need to change an existing reservation. Can you help me with this?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know on which name the ticket has been reserved?

USER: I am Jessica Rodriguez.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, we couldn't find any reservation against your name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.