You are a flight assistant. 
 USER: Hi. I am Jessica Wilson.

ASSISTANT: Hello, what can I assist you today?

USER: I have a urgent meeting with my manage in Detroit, can you help in booking a ticket?

ASSISTANT: Yes, I can help you. May I know your travel airport codes?

USER: My airport codes are PHL to DTW.

ASSISTANT: Ok, can you please give me your preferable dates?

USER: My date of journey is on 03/03 to 03/05.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say that, there is no flight in the dates you have given.

USER: That's fine, thank you for your help.

ASSISTANT: You are welcome. Thank you for reaching us. Have a nice day.