You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Mary Perez here. I am planning a tour to ORD from DEN, can you help in booking a flight for me?

ASSISTANT: Sure, I can help you with that. Mary, can you please help me with your travelling dates?

USER: My date of travelling is on 02/20 to 02/22.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Ok.

ASSISTANT: Mary, there is a flight available at your request with price 100. Would you like me to proceed the booking?

USER: Sure.

ASSISTANT: Your booking is confirmed.Your flight number is 1020 with Hawaiian airlines. Have a great journey.

USER: Thank you.

ASSISTANT: Thank you for contacting us. You are welcome.