You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to travel IAD and BOS, can you please reserve flight ticket for my journey?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are June,17 and June,19.

ASSISTANT: On which name should I reserve the flight ticket?

USER: Myself Ruth Gonzalez.

ASSISTANT: Do you have any connection limit?

USER: I need one connection limit.

ASSISTANT: Do you have any particular time for departing and returning?

USER: My depart time should be in the afternoon.

ASSISTANT: Do you have any other specifications?

USER: I need economy class and my return time should be in the afternoon. I am ok with any depart time.

ASSISTANT: Ok, please wait a moment.

USER: Please wait a moment.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to complete my journey. Thank you for the information.

ASSISTANT: Thank you for reaching us.