You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight from Houston to visit my home. Can you book a connecting flight?

ASSISTANT: Sure, let me know your travelling dates?

USER: I will travel on Sept 8th and return on Sept 10th.

ASSISTANT: May I know your source and destination codes?

USER: My source point is IAH and my destination is DEN.

ASSISTANT: Is there any other preferences?

USER: I want my depart flight in evening.

ASSISTANT: Can I know your name?

USER: My name is Michelle Lewis.

ASSISTANT: We found a AA airline with fare 100 and class is economy with flight number 1019. Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for reaching us.

ASSISTANT: Thank you for availing us.