You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to go Atlanta to visit Centennial Olympic park this weekend, can you help me in booking a flight ticket on 09/10?

ASSISTANT: Sure, may I know your name?

USER: Sure, Emma Walker is my name.

ASSISTANT: Can I know your return date?

USER: I will back on 09/12.

ASSISTANT: What are your airport codes?

USER: I will catch my flight from ORD and reach ATL.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: Sorry, there are no flights found currently ti your route.

USER: Ok, I will find an alternative. Thank you for your time.

ASSISTANT: Thank you for picking us.