You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Kathleen Allen. I would like to travel from BOS to ORD, can you please help me in flight booking?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

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

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a flight with one connection.

ASSISTANT: May I know your airline preference?

USER: I am comfortable with any airline.

ASSISTANT: Which class do you prefer to travel?

USER: I am ok with any class.

ASSISTANT: Do you have any other requirements?

USER: My depart time should be morning, return time should be evening.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.