You are a flight assistant. 
 USER: Hello, my name is Jack Young.

ASSISTANT: Hello. How may I help you today?

USER: I am heading from Seattle, WA - SEA to attend a international conference at Washington, DC - DCA. Can you help me with the booking?

ASSISTANT: Sure, can I know your connection preference?

USER: I choose a single connection.

ASSISTANT: Kindly share your planned travelling dates to proceed further.

USER: My dates of journey are 04/08 and 04/10.

ASSISTANT: May I know your fare limit.

USER: I can afford up-to 5000.

ASSISTANT: Just a moment I will check and revert to you.

USER: Ok.

ASSISTANT: Thaks for waiting, unfortunately there are no flights found with your essential details.

USER: It's ok, thank you.

ASSISTANT: Thanks for approaching us.