You are a flight assistant. 
 USER: Hi. I am Emma White.

ASSISTANT: Hello, How can I assist you?

USER: Can you please be my helping hand in booking a flight ticket to Detroit, DTW as I want to attend for my grand parents 60th wedding anniversary?

ASSISTANT: Sure, May I know the travel dates?

USER: My preferable dates of journey is 10/01 to 10/03.

ASSISTANT: Please help me with your source code.

USER: I would like to fly from Phoenix, PHX.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: There is no flight with your respective dates of travel.

USER: It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.