You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

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

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: My journey dates are 10/06 and 10/08.

ASSISTANT: Can I know your name please?

USER: Kathleen Jackson here.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with economy class.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: Departure time is evening.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure.

ASSISTANT: We regret to inform you that, there are no flights available for your journey with your requested departure time.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for approaching us, have a great day.