You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am John Gonzalez.

ASSISTANT: How can I serve you?

USER: I need to book my flight ticket from DTW and return from IAD.

ASSISTANT: Ok.

USER: Can you help me in booking my flight ticket on 07/29?

ASSISTANT: Sure. May I know your price limit?

USER: Fare of my ticket is 200.

ASSISTANT: Can you share your return date?

USER: I will return on 07/31. I need a connecting flight.

ASSISTANT: There is a flight 1005 in JetBlue airline and price 100 with connection. Shall I proceed?

USER: Proceed for booking.

ASSISTANT: Ok, Your ticket has been reserved.

USER: Thank you for assisting me.

ASSISTANT: Thank you.