You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Donna Lewis.

ASSISTANT: Lewis, how may I guide you?

USER: I would like to meet my friend at New York, will you help me in booking the flight ticket from ORD to EWR?

ASSISTANT: Lewis, could you please share me your journey dates?

USER: My preferable journey dates are 03/24 and 03/26.

ASSISTANT: Sure, please wait for a while.

USER: Ok, take your own time.

ASSISTANT: Lewis, sorry no flights are available on your preferred dates.

USER: Ok, not an issue.

ASSISTANT: Thank you Lewis for contacting us.

USER: Thank you for your information.