You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: As I am a scientist, I want to attend science festival with my students at Boston. Can you do the reservation?

ASSISTANT: May I know on which dates you are willing to travel?

USER: My trip dates are 02/09 and 02/11.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: My airport codes are MCO-BOS.

ASSISTANT: May I know your departure time and arrival time?

USER: My return time should be evening.

ASSISTANT: Do you have any other requirements?

USER: I need a connecting flight with economy class.

ASSISTANT:  Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.

USER: No issue, Thanks for the information.

ASSISTANT: Thank you. Could you please share your name?

USER: I am Edward Johnson.

ASSISTANT: Thank you.