You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to book a flight ticket from IAH to ORD?

ASSISTANT: Sure, please share your journey dates?

USER: My travelling dates are Aug 19 to Aug 21.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: Emily Clark.

ASSISTANT: We found a flight in Frontier airlines, flight number is 1009 with single connection and price is 100 economy class. Shall I proceed?

USER: Ok, please proceed to book.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.