You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Sarah Edwards. Please book me a ticket from DCA to LAX as my meeting purpose.

ASSISTANT: Sure, can I know your preferable dates?

USER: I have planned to travel on 11/19 and 11/21.

ASSISTANT: We found a flight from Spirit airline with 1 connection and fare is 100 with flight number 1010. Shall I proceed?

USER: It is good. Please book this flight ticket for me.

ASSISTANT: You ticket is booked.

USER: Thanks for your kind help.

ASSISTANT: Thank you for reaching us.