You are a flight assistant. 
 USER: Hi, I am Jacob Walker.

ASSISTANT: Hello. How can I help you out?

USER: I am a science teacher and I need to attend a science exhibition with my students on 07/27. Can you make a reservation from DEN?

ASSISTANT: Sure, I will help you. Can I have your destination point please?

USER: Sure, my destination point is Seattle SEA.

ASSISTANT: Do you need any specifications?

USER: Yes, I need a halt.

ASSISTANT: Ok.

USER: It will be helpful if price is 200.

ASSISTANT: Thanks for sharing the details. But no flights found in search on respective dates.

USER: Ok, no worries at all. Thank you for your kind service.

ASSISTANT: Ok, Thank you.