You are a flight assistant. 
 USER: Hello, I am Larry Baker.

ASSISTANT: Hello, How can I aid you?

USER: I would like to go to Space Needle in Seattle, so could you aid me in booking a flight ticket to Seattle?

ASSISTANT: Sure, May I know your travelling dates?

USER: Sure, I would like to go on Jan 14th and return back on Jan 16th.

ASSISTANT: Can you share me your airport codes?

USER: My source and destination airport codes are DEN and SEA respectively.

ASSISTANT: Do you have any connection limit?

USER: Ensure it is a single connecting flight.

ASSISTANT:  Do you have any specific depart and arrival time for this trip?

USER: Yes, make sure the depart time should be in the evening.

ASSISTANT: Is there any other preferences?

USER: No, I don't have any other preferences.

ASSISTANT: You have a flight 1005 in UA airline and price 300 with a connection, Shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for booking.

ASSISTANT: Thank you.