You are a flight assistant. 
 USER: Hi. I am Emily Perez.

ASSISTANT: Hello, How can I serve you?

USER: I need to book a flight ticket from SFO to PHL, Can you please help me for booking?

ASSISTANT: Sure, May I know the journey dates?

USER: I would like to travel on 01/05 to return on 01/07.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any preference in return time?

USER: I would be return on afternoon.

ASSISTANT: Is there any other requirements?

USER: I need a business class.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for availing us.