You are a flight assistant. 
 USER: Hai, I am Sarah Williams.

ASSISTANT: Hello, how may I serve you?

USER: I want to visit celebrate my parents marriage anniversary in Seattle, WA - SEA. Can you please help me with single connection?

ASSISTANT: Sure, may I know your source code?

USER: Sure, my  origin code is NC - CLT.

ASSISTANT: Can I know your travelling dates?

USER: My journey dates are 05/11 to 05/13.

ASSISTANT: Please wait for a while.

USER: Ok. I am waiting for your response.

ASSISTANT: We found a flight with number 1018 and Ua as airline. The cost of the ticket is 100.

USER: Ok, you can proceed with booking.

ASSISTANT: Your booking is done.

USER: Thank you for helping us.

ASSISTANT: Thank you for availing us.