You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I have a event Chicago, I would like to attend that event. so, please out from this.

ASSISTANT: Sure, can I know your airport codes?

USER: My location codes are from OAK to ORD.

ASSISTANT: Can I know your travel dates?

USER: My preferable dates of travelling is from 03/27 till 03/29.

ASSISTANT: Give me a minute, let me check the details.

USER: Make sure that, connection limit should be 0.

ASSISTANT: Can I know your name?

USER: My name is Frank Miller.

ASSISTANT: Sorry Miller, there are no flights available with 0 connection limit.

USER: That's ok, no issues. Thank you for your help.

ASSISTANT: Welcome.