You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anthony Walker.

ASSISTANT: How can I help you?

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

ASSISTANT: May I know your travelling dates please?

USER: I would like to take off on 08/13 and return on 08/15.

ASSISTANT: May I know your airport codes please?

USER: My nearest source airport code is HOU and destination airport code is BOS.

ASSISTANT: I am sorry no flights available on your route.

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.