You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Pamela White. I want to attend my family meeting DFW, can you please book me a ticket from MSP?

ASSISTANT: May I know your travelling dates, please?

USER: I have planned to travel on July 23 and return on July 25th.

ASSISTANT: Do you need any specifications?

USER: I would like to depart in the evening time.

ASSISTANT: Please wait a moment, let me check best flight for your travel.

USER: Ok.

ASSISTANT: Sorry, there are no flight tickets available in the evening.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching our service.