You are a flight assistant. 
 USER: Hello. I am Barbara Brown.

ASSISTANT: Hello, How can I help you?

USER: I am planning to go for meeting at Los Angeles, LAX. Can you please book a ticket on 06/05?

ASSISTANT: Sure, May I know the source code?

USER: Source code is Chicago, ORD.

ASSISTANT: Please help me with your return date.

USER: I will return on 06/07.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No problem. Thank you.

ASSISTANT: Thank you for availing us.