You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Hill.

ASSISTANT: What help are you seeking from our end?

USER: I am planning to visit New England Aquarium at Boston, could you please help me with booking a flight ticket from SEA to BOS?

ASSISTANT: Rebecca Hill, may I know your desired dates for this journey?

USER: I would like to depart on June 11th and return on June 13th.

ASSISTANT: Do you have any other requirements?

USER: Make sure that my return time is evening.

ASSISTANT: Sorry to say, there are no flights available for your journey. Thank you for connecting with our services.

USER: That's ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Have a great day ahead.