You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I help you?

USER: I am Michelle Turner. I want to book a flight ticket with my price limit of 5000. Could you help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My departure is 04/19 and my return date on 04/21.

ASSISTANT: Do you need any connection?

USER: I need a single connection.

ASSISTANT: Can I know your journey codes?

USER: I am planning to visit Smith Tower in WA - SEA and my source from TX - HOU.

ASSISTANT: Sorry, there is no flight found with your specification.

USER: Not an issue. Thanks for your service.

ASSISTANT: Thank you for availing us.