You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Samantha Lee. I need to visit my grand mother's house on 05/12. Can you help me?

ASSISTANT: Sure, may I know your source and destination airport codes please?

USER: Ok, my origin airport code is SEA and destination code is CLT.

ASSISTANT: Do you want me to book return ticket also?

USER: Yes please book my return date on 05/14.

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: UA airlines is having a flight with travel charge of 200, shall I proceed for booking?

USER: Is that flight has 0 connection limit because I need to reach my destination as soon as possible, can you check?

ASSISTANT: Sorry to inform you that there are no flights available with 0 connection.

USER: That's not a problem, I will book in other way. Anyway thank you for assisting me.