You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Will you please book me a flight ticket from DFW to BOS?

ASSISTANT: Sure, may I know good name please?

USER: I am Emily Harris.

ASSISTANT: Do you need a lay by in between the journey?

USER: Yes, I need 1 lay by.

ASSISTANT: On which dates would you like to travel?

USER: I will start on July 17th and return on July 19th.

ASSISTANT: Do you have any other requirements?

USER: Yes, I am looking for a major cost airline.

ASSISTANT: We found a Hawaiian airline with fare of 100 and a lay by in between the journey  matches your schedule.

USER: Fine, please proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1020.

USER: Thanks for your assistance.

ASSISTANT: Thank you for reaching us.