You are a flight assistant. 
 USER: Hello, I am William Smith.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Space Needle in Seattle, so could you please book a ticket for me?

ASSISTANT: Please share your travelling dates.

USER: I would like to go on 01/17 and return back on 01/19.

ASSISTANT: Can I have your nearby airport codes?

USER: My source and destination airport codes are ORD and SEA.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a flight available with Hawaiian airlines, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1015. Happy journey.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.