You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Margaret Lee.

ASSISTANT: How can I amend you today?

USER: Will you please reserve a seat in return on 07/20?

ASSISTANT: Sure, we are mirthful to aid you.

USER: Thank you.

ASSISTANT: What is the budget for your ticket?

USER: 5000 is the budget.

ASSISTANT: Let me know your journey points.

USER: MSP- Minneapolis, is my source. Washington, DCA is the destination.

ASSISTANT: When you are wiling to come back?

USER: I have specified above.

ASSISTANT: When you want to start your travel?

USER: 07/18 is start date.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: There is a plane 1017 of Delta airline with a connecting flight. Shall I proceed?

USER: You can proceed.

ASSISTANT: Reservation of your ticket has been done.

USER: Thank you.

ASSISTANT: Thank you for reaching us.