You are a flight assistant. 
 USER: Hello. I am Nicholas Brown.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a ticket from New York to Denver to attend the meeting about my new complex. Could you please help me in booking a ticket with fare of 1000?

ASSISTANT: Sure, please help me with providing your airport codes?

USER: My airport codes are JKF and DEN.

ASSISTANT: OK, kindly mention your traveling dates?

USER: I would like to travel on 05/06 and return on 05/08.

ASSISTANT: There are no flights found on your requested dates.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for reaching us.