Hello.
user
Hello. How may I aid you?
assistant
 My name is Jessica Robinson. I would like to book a ticket from JFK to SFO, to attend a conference.
user
Please provide your itinerary dates.
assistant
My itinerary travel dates are Aug 30 and Sept 01.
user
Do you have any specifications?
assistant
I would like to board a single connection flight where the depart time should  be in the evening.
user
Do you have any other requirements?
assistant
No, I have none.
user
Please give me a moment to check for available flights.
assistant
Sure, take your time?
user
Sorry, no flights are available as per your requirements.
assistant
No problem, thank you for the time and information.
user
Thank you for choosing us.
assistant