You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to meet my school friend in Chicago, so please book a flight ticket from PHX to ORD.

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: I want to fly on Nov 24, return on Nov 26.

ASSISTANT: Do you require any stopovers in your journey?

USER: No, I want direct flight.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: My depart time should be evening.

ASSISTANT: May I know your name please?

USER: My name is Paul Mitchell.

ASSISTANT: Ok, please wait a minute I will get back to you with the flight details.

USER: Sure.

ASSISTANT: Thank you for being patient, we didn't find any flights which matches your requirement.

USER: Not an issue, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.