You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Nicholas Edwards. Can you reserve a seat from DCA to AUS, to meet my friend.

ASSISTANT: Yes, I can do that for you. Can you share me your dates of travel?

USER: Thank you, I would like to travel on 10/11 and 10/13.

ASSISTANT: Give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that there is no flight found on your requested dates.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for approaching us.