You are a flight assistant. 
 USER: Hello,. I am Cynthia Miller.

ASSISTANT: Hello. How can I aid you?

USER: I want to book a flight ticket to go for a Yosemite Adventure in Phoenix, AZ - PHX. Can you please book a flight ticket from Boston, MA - BOS?

ASSISTANT: Ok, may I know your travelling dates?

USER: My journey dates are 04/04 - 04/06.

ASSISTANT: Do you have any preference?

USER: My fare limit is 200.

ASSISTANT: We found a connecting flight Delta with flight number 1028 and fare is 200.

USER: Please proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT:  Thank you for opting us.