You are a flight assistant. 
 USER: Hello. I am Brenda Thompson.

ASSISTANT: Hello, how may I serve you?

USER: Can you please help me with booking a flight ticket from Seattle with price under 500?

ASSISTANT: Sure, are you okay with a connecting flight or you need a direct flight?

USER: I am ok with connecting flight.

ASSISTANT: Could you please mention your airport codes?

USER: My airport codes are SEA and DFW.

ASSISTANT: On what dates are you willing to travel?

USER: My travelling dates are 11/17 and return on 11/19.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for sharing your details. Currently there are no flights available on your required dates.

USER: No problem, thank you for your valuable information.

ASSISTANT: Thank you for consulting us.