You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket under a fare of 5000 to Boston, MA - BOS? Can you assist me?

ASSISTANT: Sure, when are you planning to travel?

USER: I am planning to travel on 05/07 to 05/09.

ASSISTANT: Please provide your origin airport code.

USER: Detroit, MI - DTW is my origin airport code.

ASSISTANT: UA airlines with single connection and price is 100 of 1020 flight. Shall I proceed for booking?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks a lot for the great help.

ASSISTANT: Thank you.