You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Can you please help me in booking a ticket?

ASSISTANT: Sure, can you provide your travel details?

USER: Myself Joseph Hill. My airport codes are from CO-DEN to NY-LGA.

ASSISTANT: Can you provide your travel dates?

USER: My travelling dates are from 04/06 to 04/08.

ASSISTANT: Flight number 1002 of UA airlines is available for you.

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help in booking a ticket.

ASSISTANT: Thank you for contacting us.