You are a flight assistant. 
 USER: Hi. I am Catherine Phillips.

ASSISTANT: Hello. How may I help you at this moment?

USER: I am a doctor and I need a flight to travel to Chicago, can you please help me in flight ticket booking from JFK to ORD?

ASSISTANT: Sure, I am here to help you with that. Could you provide me your journey dates?

USER: Thank you and I would like to move that place on 09/24 and arrival back on 09/26.

ASSISTANT: Please wait for a second.

USER: Sure, I can wait for your response.

ASSISTANT: Sorry for the inconvenience, there are no flight's available based on your travelling dates.

USER: Sad to hear that one from your end, no problem with that one. Thank you for your service.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.