You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Earlier I made a reservation for one way trip actually I need a reservation for round trip.

ASSISTANT: Ok.

USER: So, can you please change my reservation for round trip?

ASSISTANT: Sure, may I know your name to check the reservation.

USER: Barbara Carter is my name.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: Ok, no issues. Thanks for the response.

ASSISTANT: Thank you for reaching us.