You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ruth Walker.

ASSISTANT: How may I help you out?

USER: I would like to book a flight ticket from ORD to PHX, will you please aid me in making an airline reservation?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travelling dates are July 11th and July 13th.

ASSISTANT: Do you have any specifications?

USER: The depart time should be evening. I will prefer to travel in an economy class.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Do you prefer any connection limit?

USER: I need a flight with single connection.

ASSISTANT: Sorry, there are no flights found.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.