[{'role': 'USR', 'utterance': 'Excuse me. Is this seat taken?'}
 {'role': 'SYS', 'utterance': "No. it's not taken."}
 {'role': 'USR', 'utterance': 'Oh. thank you.'}
 {'role': 'SYS', 'utterance': 'Oh. let me help you with this.'}
 {'role': 'USR', 'utterance': 'Oh. thank you.'}
 {'role': 'SYS', 'utterance': 'Do you want to sit by the window?'}
 {'role': 'USR', 'utterance': 'No. no. no. I like the aisle seat better. You can sit by the window.'}]
{'role': 'SYS', 'utterance': 'My name is Mike Gerard Hogan. Pleased to meet you.'}