You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Emma Baker, I am planning for a round trip to Boston MA-BOS. Can you help me to book a flight under fare of 500?

ASSISTANT: Sure, may I know when do you want to travel?

USER: I will fly on 05/21 and return on 05/23.

ASSISTANT: Do you need a halt?

USER: Yes, I need a halt.

ASSISTANT: Delta airline with flight number 1026 is going on your route and the fare is 100. Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Your booking has been done.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.