You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Catherine Robinson.

ASSISTANT: Catherine, how can I assist you?

USER: I want to attend my friend's wedding in New York. Can you book a ticket from DEN to LGA?

ASSISTANT: Please provide your journey dates.

USER: I want to travel on 06/16 and 06/18.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: UA airlines with flight 1018 is available on your route.

USER: Proceed to booking.

ASSISTANT: Your ticket is reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.