You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I Provide service to you?

USER: I am Helen Taylor, can you help me to book a flight within 500 price limit?

ASSISTANT: Sure, we are glad to help you.

USER: I need a connecting flight.

ASSISTANT: May I know which airports you wish to board and land?

USER: My travelling airport codes are SEA to IAH.

ASSISTANT: Can you please help me with providing your depart and arrival dates of the journey?

USER: My travelling dates are 03/24 and 03/26.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: We found a UA airlines matching your preferences. and the fare of 100.

USER: Proceed with booking.

ASSISTANT: Your ticket has been reserved in economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.