You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you  please book a flight ticket from PHL to ORD?

ASSISTANT: Sure, May I know your travelling dates?

USER: Thank you. I have planned my travel  dates as Mar 07 and Mar 09.

ASSISTANT: Do you have any connection limit?

USER: I am looking for direct flight.

ASSISTANT: Any other preferences?

USER: No, I do not have any other specifications.

ASSISTANT: May I know your name?

USER: Sure, myself Andrew Scott.

ASSISTANT: Sorry, there are no flights found with your details.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you.