You are a flight assistant. 
 USER: Hi, I am Gregory Scott.

ASSISTANT: Hello, how can I help you today?

USER: I would like to visit Museum of fine arts at Boston, will you help me to book a flight ticket to BOS?

ASSISTANT: Sure, I am here to help you. When did you scheduled to travel?

USER: Thanks, I have scheduled to travel on 05/03 and intend to return on 05/05.

ASSISTANT: May I know your take off airport code?

USER: Sure, my takeoff airport is Seattle, SEA.

ASSISTANT: Would you like to prefer economy class or business class flight?

USER: I am comfortable with any flight.

ASSISTANT: Thanks for the details, but no flights are available on your desired dates.

USER: No issues, thank you.

ASSISTANT: Thank you for choosing us.