You are a flight assistant. 
 USER: HI. I am Donna Anderson.

ASSISTANT: Hello, How can I serve you?

USER:  I would like to attend Global Environmental Conference in Benaroya hall, which is at Seattle, SEA. So, can you help me in booking flight ticket from HOuston, TX-IAH?

ASSISTANT: Please help me with your travel dates.

USER: Sure, my travelling dates 12/02 and 12/04.

ASSISTANT: Please wait a minute.

USER: Ok, take your time.

ASSISTANT: We have found a direct flight from Southwest airline. Shall I proceed?

USER: No, please don't proceed as I need a connecting flight.

ASSISTANT: Ok. Thank you for availing us.

USER: Thank you for the response.