You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Edward Davis, can you help me to find a flight for my trip?

ASSISTANT: How can I help you?

USER: I would like to visit DEN for marketing my products, my location is DEN.

ASSISTANT: May I know your travelling dates? Please provide me your airport codes?

USER: I am planning to travel on 07/19 and 07/21.

ASSISTANT: I found a flight for your information. Shall I book a flight ticket?

USER: That's great, please proceed.

ASSISTANT: Your flight has been booked.

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

ASSISTANT: Thank you, have a safe journey.