You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: My name is Catherine Brown. Can you please help me in booking the flight ticket from CLT to BOS?

ASSISTANT: Sure, we are glad to help you in booking. Can you please share your journey dates that you prefer to travel?

USER: My travel dates are 05/31 and 06/02.

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

USER: I would like to depart in the afternoon.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: And I want to return in the evening.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for approaching us.