You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you now?

USER: I am Emma Edwards, can you assist me in booking my flight ticket to DFW from DEN to attend a meeting there?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Thank you for considering my request. My travel dates are Dec 17 and Dec 19.

ASSISTANT: Do you have any specific timings of your journey?

USER: I need to departure from my location in the evening.

ASSISTANT: Ok, please wait a moment to check flight availability.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Emma Edwards, no evening flight is available to you on your dates.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for choosing us, have a good day.