You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Timothy Martin. Can you please help me in booking my flight ticket from LAG to IAD?

ASSISTANT:  Sure, I will help you. Please send your travelling dates.

USER: My trip dates are Oct 25 and Oct 27.

ASSISTANT: Sure, can you please share your connection preferences?

USER: I need connecting flight.

ASSISTANT: There is a connecting flight-1009 on UA airlines. Shall I proceed?

USER: I need evening flight while I  start my journey.

ASSISTANT: Sorry, no flight found on your route with your preferences.

USER: Ok, fine thank you for checking.

ASSISTANT: Thanks for contacting us.