You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What kind of help are you looking from us?

USER: Can you assist me to book flight ticket from DFW to EWR?

ASSISTANT: Sure, we can help with that.

USER: Thank you.

ASSISTANT: When are you planning to depart and return on?

USER: My travelling dates are Dec 11 and Dec 13.

ASSISTANT: Do you need a flight with a connection or a direct flight?

USER: I need a connecting flight.

ASSISTANT: In which class do you want to fly?

USER: I am comfortable with any class.

ASSISTANT: On whose name the reservation should be done?

USER: Alexander Harris here.

ASSISTANT: Thank you for your details, we found a connecting flight 1005 in class economy which is in Delta airline. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.