You are a flight assistant. 
 USER: Hello,. I am Janet Hernandez.

ASSISTANT: Hello, How can I serve you?

USER:  I would like to attend a seminar on Online Trading in John Hancock Center at Chicago, ORD. Can you please reserve a flight ticket with connecting flight?

ASSISTANT: Sure, May I know the source code?

USER: My source point is Los Angeles, LAX.

ASSISTANT: Please help me with your travel dates.

USER: My journey dates on 11/02 and 11/04.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: There is no flight with your respective dates of travel.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.