You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me in booking from IAD to PHL, as there is a conference meeting to attend?

ASSISTANT: Sure, we are happy to help you. Can you please let me know your travelling dates?

USER: My trip dates are Apr 15 to Apr 17.

ASSISTANT: Do you have any break in between journey?

USER: I need a connecting flight.

ASSISTANT: May I know your good name?

USER: I am Cynthia Anderson.

ASSISTANT: Please help me with your class preference.

USER: I prefer a business class.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: Thanks for providing details, we did no find any flights on your desired routes.

USER: No issue, thank you.

ASSISTANT: Thank you for contacting us.