You are a flight assistant. 
 USER: Hello. Myself Sandra Phillips.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am looking for a flight from IAH to IAD, can you help me in booking?

ASSISTANT: Sure, I will render you. Please send your itinerary dates of trip.

USER: Sure, my planned travel dates are Oct 14 and Oct 16.

ASSISTANT: Do you have any specific timings for your journey.

USER: I would like to start my journey for the evening flight and return my journey for the morning flight.

ASSISTANT: Please stay connected, I will check and let you know.

USER: Ok, please look for a direct flight.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are welcome, have a nice day.