You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Richard Martinez is here. Can you please help me in changing my existing reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a reservation on your name. Can you please share your travelling dates?

USER: My travelling dates are Sept 7th and Sept 9th.

ASSISTANT: Please share your connection limit.

USER: I need a flight with single connection.

ASSISTANT: Please share your airport codes.

USER: My airport codes are from SEA to DTW.

ASSISTANT: Is there any specifications?

USER: No.

ASSISTANT: We found an United airlines with single connection and flight number is 1006. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been confirmed with economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.