You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Can you help me to book a normal cost airline ticket?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travel dates are July 29 and July 31.

ASSISTANT: Can you please share your airport codes?

USER: My airport codes are SEA and ORD.

ASSISTANT: May I know your name please?

USER: My name is Deborah Harris.

ASSISTANT: Do you have any other specifications?

USER: I prefer direct flight for this trip.

ASSISTANT: Deborah Harris, there are no flights available in your route.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.