You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

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

ASSISTANT: Sure, I am here to help you. Can you please let me know your travel dates?

USER: I would like to take off on 01/20 and return on 01/22.

ASSISTANT: May I know your source and destination airport codes?

USER: My source airport code is IAH and destination airport code is BOS.

ASSISTANT: Ok, please be online for a while.

USER: Sure, take your time.

ASSISTANT: Sorry Smith, I did not find any flight available on your preferred dates.

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

ASSISTANT: You are most welcome and thank you very much for choosing us.