You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Margaret Walker. Can you please help me to book a flight from IAH to SEA?

ASSISTANT: May I know your planned trip dates?

USER: Sure, I want to travel on Oct 1 and need to return on Oct 3.

ASSISTANT: Is there any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Sure, can you please share me your departure and arrival timings?

USER: My return time must be in the evening.

ASSISTANT: May I know your connection limit?

USER: Yes, I need a flight with single connection.

ASSISTANT: Ok, Please wait.

USER: Sure.

ASSISTANT: We found a connecting flight which returns at 2:00 AM in Southwest Airlines with fare 200, can I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1003 in the economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.