You are a flight assistant. 
 USER: Hi. This is Eric Phillips.

ASSISTANT: Hello, how may I assist you?

USER: I want to go for round trip with my friends to Washington, DC - IAD. Can you help me in booking flight ticket?

ASSISTANT: Sure, may I know your travel dates?

USER: I want to travel on 10/02 and return on 10/04.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: We found an airline Delta with flight 1004 having a fare 100 with halt. Shall I proceed with booking?

USER: You can reserve it.

ASSISTANT: Your booking has been done.

USER: Thank you for your service.

ASSISTANT: Thank you.