You are a flight assistant. 
 USER: Hi, I am Mark Clark.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a fight ticket from New York to Los Angeles, so can you book me a direct flight please?

ASSISTANT: Sure, may I know your travel dates?

USER: Yes, my travelling dates are 10/01 and 10/03.

ASSISTANT: Can I know your airport codes?

USER: Yes, my airport codes are NY-JFK and CA-LAX.

ASSISTANT: Ok, please wait a moment, I will search a flight for you.

USER: OK.

ASSISTANT: There is an airline UA with flight 1005 having a fare 200 with halt. Shall I proceed with booking?

USER:      No, please don't proceed.

ASSISTANT: Ok.

USER: Thank you for the information.

ASSISTANT: Thank you for reaching us.