You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Yes. Can you please make a reservation between BOS and LAX for my business meeting?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: Thank you, my departure is on Sept 27 and please book my return ticket on Sept 29.

ASSISTANT: Ok, could I have your name please?

USER: Sure, my name is Catherine Phillips.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I will prefer connecting flight.

ASSISTANT: Ok, please allow me a moment.

USER: Sure, take your time but please book my return flight in morning time.

ASSISTANT: Sorry, there is no flight with your requested time.

USER: Oh! Sad to hear that. Anyway, thank you for the information.

ASSISTANT: You are welcome, have a great day.