You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I would like to travel from DEN to BOS as a holiday trip. Can you do the reservation?

ASSISTANT: Sure, Can you please share your travel dates?

USER: My trip dates are 04/10 and 04/12.

ASSISTANT: May I know your depart and arrival timings?

USER: My departure time is morning.

ASSISTANT: May I know your good name to proceed further?

USER: Ryan Walker here.

ASSISTANT: Which class do you prefer either economy or business?

USER: I am comfortable with any class.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: There are no flights found on your specified travel dates.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for availing us.