You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Mary Collins.

ASSISTANT: Can you please tell me how can I assist you?

USER: Can you help me booking flight on 10/25?

ASSISTANT: Ok, please tell me your travel codes?

USER: My origin airport code is IAD and destination airport code is LGA.

ASSISTANT: Can you please provide me your return date?

USER: I am going to return on 10/27.

ASSISTANT: I found a flight ticket with price 100 and connection limit is 1 with 1029 flight number.

USER: Proceed to booking that flight.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for confirming my flight ticket.

ASSISTANT: Thank you for choosing our service.