You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you?

USER: Can you please assist me in booking a flight ticket to ORD from PHL?

ASSISTANT: Sure, we are glad to help you. Please let me know your trip dates.

USER: My travel dates are from Feb 18 to Feb 20.

ASSISTANT: Do you have any connection limit?

USER: I would like to travel in connecting flight.

ASSISTANT: Please help me with your class preference.

USER: I prefer to travel in business class.

ASSISTANT: Is there any other specifications for you?

USER: Please make sure that return time should be in the morning.

ASSISTANT: May I know your good name please?

USER: I am Emma Turner.

ASSISTANT: Thanks for providing details, no flights are available on your journey routes.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.