You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Christopher Parker. I need to book a flight ticket from PA-PHL to AZ-PHX. Can you help me for booking a flight ticket please?

ASSISTANT: Sure. May I know your travelling dates to proceed?

USER: I would like to travel on 11/12 to arrival on 11/14. I need single connection limit.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for your time. There is no flight available at this moment.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for contacting us.