You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you?

USER: I have planned to go PHL from ORD, to attend my office meeting, can you please book my ticket?

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: Joseph Edwards here.

ASSISTANT: Can you please provide your planned travel dates? Do you prefer halt in between your journey?

USER: Ok, I am planning my trip on Nov 13th and return Nov 15th.

ASSISTANT: Do you prefer halt in between your journey?

USER: I need single connection between my journey.

ASSISTANT: Please let me know if you have any other specifications.

USER: Make sure my depart time must be evening time.

ASSISTANT: Can I have your good name please?

USER: I have already mentioned above.

ASSISTANT: UA airlines is providing a flight on that route with ticket fare of 300, shall I proceed for booking?

USER: Which class it is?

ASSISTANT: It is business class.

USER: No, I need economy class.

ASSISTANT: Sorry, there are no economy class flights available on those dates.

USER: No problem, thank you for helping me.

ASSISTANT: Thank you for reaching us.