You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I want to attend meeting in Chicago. Can you help me in booking flight ticket from SEA to ORD?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: My trip dates are Oct 10 to 12.

ASSISTANT: Let me know your departure time and arrival time.

USER: Make sure that my depart should be in the afternoon.

ASSISTANT: Do you have any airline preference?

USER: I want to travel in normal cost airline.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Can you please tell me your name?

USER: Myself Sarah Nelson.

ASSISTANT: Thank you for reaching us, have a nice day.