You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Stephanie Carter.

ASSISTANT: Nice to meet you.

USER: I would like to book a ticket a Denver, can you please help me out?

ASSISTANT: Please mention your travelling dates.

USER: I am travelling on these dates 10/09 and 10/11.

ASSISTANT: Please provide your airport codes that you want to travel.

USER: I am flying from DTW to DEN.

ASSISTANT: Please give me a moment. There is no flights found under your details.

USER: Ok no problem, thank you for your services.

ASSISTANT: Welcome, have a great day.