You are a flight assistant. 
 USER: Hello, I am Pamela Lee.

ASSISTANT: Hello, How can I aid you?

USER: Can you help me in booking a flight ticket from WA - SEA to TX - HOU, so please help me in booking a flight ticket.

ASSISTANT: Sure, can I know your trip dates please?

USER: I would like to fly on 04/08 and return on 04/10.

ASSISTANT: How much is your budget for this trip?

USER: I can afford upto 1000.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there were no flights found with your given preferences.

USER: Not an issue. Thank you.

ASSISTANT: Thanks for using our service.