You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Debra Green.

ASSISTANT: How may I assist you?

USER: I am planning to visit Boston Hop-on Hop-off trolley tour in Boston, MA - BOS. Can you assist me to book a connecting flight?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to fly on 03/25 and recur on 03/27.

ASSISTANT: Please share me your origin airport code?

USER: My origin is from Minneapolis & St. Paul, MN - MSP.

ASSISTANT: No flight on your details.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you.