You are a flight assistant. 
 USER: Hi. I am John Martinez.

ASSISTANT: Hello, How can I aid you?

USER: I want to fly from New York, EWR to Chicago, ORD. can you book a flight ticket with a direct flight?

ASSISTANT: Sure, we are here to make your journey comfort.

USER: Thank you.

ASSISTANT: Can you please let me know your travelling dates?

USER: My travelling dates are from 11/21 to 11/23.

ASSISTANT: Ok, please wait a while.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to inform you that we did not find flight on your requirements.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for opting us.