You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jeffrey Martin.

ASSISTANT: What can I do for you now, Jeffrey Martin?

USER: I need a connecting flight from IAD to SEA.

ASSISTANT: Ok.

USER: Can you book a flight for me?

ASSISTANT: Sure, I will do it. Can I have your starting date of journey?

USER: It is 07/01.

ASSISTANT: May I know your price limit?

USER: My price limit is 5000.

ASSISTANT: Fine. Let me know your return date.

USER: 07/03 is my return date.

ASSISTANT: Flight with UA airline of price 100 with 1 connection of 1012 flight which is suitable for you. May I reserve it?

USER: Ok, then book it.

ASSISTANT: Booking has been done.

USER: Thank you.

ASSISTANT: Thank you.