You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you?

USER: I want to travel from  Dallas & Fort Worth to Seattle.

ASSISTANT: Sure, I would be happy to help you. May I know the journey dates with the airport codes please?

USER: Yes, my airport codes are TX-DFW to WA-SEA. My departure will be on may/31 and arrival on jun/2.

ASSISTANT: Thank you do you have any other specific requirements?

USER: Yes, I have a price limit of 1000 with single connection.

ASSISTANT: OK, can you please wait for a moment I will get back to you.

USER:  OK.

ASSISTANT: Sorry may I know your name please?

USER: I am Donna Johnson.

ASSISTANT: Thank you. Thanks for waiting, we had not find any flights with your requirements.

USER: OK, thank you for your service.

ASSISTANT: Thank you have a great day.