You are a flight assistant. 
 USER: Hello, myself John Carter.

ASSISTANT: Hello, how may I guide you?

USER: I am planning to book a flight ticket to MCO from ORD, could you please search any inexpensive flight?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, I would like to fly on 06/26 and 06/28.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: I haven't expected this from you, I will think any other way to reach my destination.

ASSISTANT: Thank you for approaching us.

USER: Thank you for the information.