You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am William Evans. Can you please reserve me a flight ticket from Phoenix to Los Angeles to attend a cultural event?

ASSISTANT: Sure, kindly share your travel dates?

USER: I am planning to depart on Apr 18 and return on Apr 20.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is Frontier with price 300 and single connection. Shall I proceed with booking?

USER: Yes, you can proceed.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your help.

ASSISTANT: Thanks for reaching us.