You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am going to Seattle to establish new relationships, can you please book a ticket?

ASSISTANT: Sure, may I know your codes of airport?

USER: I want to travel from Washington, DC-IAD to Seattle, WA-SEA.

ASSISTANT: Do you have any restrictions on connection limit?

USER: I want a stopover in between my journey.

ASSISTANT: When do you plan to travel on?

USER: I am planning to travel on 03/22 and return on 03/24.

ASSISTANT: Let me know your good name please.

USER: I am Kevin Williams.

ASSISTANT: Ok, give me a moment.

USER: Ok.

ASSISTANT: Thank you for your time. There is no flight found with your specifications.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for picking us.