You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I have to attend a Live Concert at Philadelphia, could you please help me with booking a flight ticket from LAS to PHL?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: I would like to depart on June 7th and return on June 9th.

ASSISTANT: Do you have any class or time preferences?

USER: Make sure that my depart time must be afternoon.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry, there is no flight available with your requirements.

USER: Ok, not an issue.

ASSISTANT: May I know your name for our documentation purpose?

USER: Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: I am Jessica White.

ASSISTANT: Thank you.