You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how my I help you at this moment?

USER: I am planning to go for Arts and crafts festival at Denver, can you please book a ticket?

ASSISTANT: Sure, can I know your dates of travelling?

USER: My planned dates of travel are from 10/06 to 10/08.

ASSISTANT: Please share your nearby airport codes.

USER: My source is at Washington, DC-IAD and destination is at Denver, CO-DEN.

ASSISTANT: May I know your name?

USER: I am Emily Thompson.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: There is a flight available with Delta airlines, shall I book it? Your book is done with flight number 1015. Happy journey.

USER: If it is direct flight, please book,.

ASSISTANT: Sorry, there is no direct flight vailable.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.