You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you/.

USER: I am Anna Allen. Please book me a ticket from SFO to DTW to meet my friends.

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: I have planned to travel on 05/16 and 05/18.

ASSISTANT: Please wait for a while, I will revert to you.

USER: Ok.

ASSISTANT: There is a flight found with number 1019, Spirit as airline. The cost of the ticket is 100.

USER: Ok, please book this ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.