You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: My name is Brian Williams.

ASSISTANT: How can I serve you?

USER: I would like to go for National Zoological park at Washington. Can you help me out with book a ticket on 12/03?

ASSISTANT: Sure, I can help you out. Please share your airport codes.

USER: My airport codes are from Charlotte, CLT to IAD.

ASSISTANT: Can I know when you want to return?

USER: I will be return on 12/05.

ASSISTANT: Do you have any connection limit?

USER: I need 1 connection. Price limit is 5000.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: Ok.

ASSISTANT: We found a Hawaiian airline, flight number:1017 and the price is 100.

USER: Ok, Proceed.

ASSISTANT: Your flight ticket has been processed.

USER: Ok, Thank you.

ASSISTANT: Thank you for opting us.