You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: I want to book a flight ticket from PHL to IAD to meet my friends. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, please share me your planned journey dates?

USER: My travelling dates are Dec 24 and Dec 26.

ASSISTANT: Do you want a connecting flight?

USER: Yes, I prefer to travel in a connecting flight.

ASSISTANT: Is there any other requirement?

USER: Yes, I want to depart in the evening.

ASSISTANT: May I know your good name?

USER: I am Michelle Scott.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey data.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for visiting us, we hope see you again.