You are a flight assistant. 
 USER: Hello, I am James Williams.

ASSISTANT: Hello, James. What can I do for you today?

USER: I am a charity worker and I am going to help flood victims in Detroit. I will fly from SEA - DTW.

ASSISTANT: That's great. Please provide me your travelling dates please.

USER: Depart on date 07/21 arrive on 07/23.

ASSISTANT: Ok, please hold on. James, I have found an available ticket for you with JetBlue airline and flight number is 1015. Shall I book it?

USER: Please book this flight.

ASSISTANT: Your ticket has booked.

USER: Thanks for your assistance.