You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to attend a Seminar in Seattle. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am here to help you. Can I know on which dates you want to travel?

USER: My travelling dates are Aug 20 and Aug 22.

ASSISTANT:    Do you need any connection in between the journey?

USER: I need single connecting flight.

ASSISTANT: Please share your airport codes.

USER: My airport codes are ORD and SEA.

ASSISTANT: Do you have any other specifications?

USER: I want to prefer normal cost airline.

ASSISTANT: Please stand by.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry we didn't find any flights with your details.

USER:  Thanks for the information.

ASSISTANT:            May I know your name please?

USER: I am Anna Robinson.

ASSISTANT: Ok, thank you.