Hi, myself Timothy Mitchell.
user
Hello. How can I assist you Timothy Mitchell?
assistant
 I want to book a ticket from OAK to ORD, can you help me?
user
Sure, can you please provide your travelling dates for a better search?
assistant
My planned dates of journey are from 03/29 to 03/31.
user
As per your provided dates, there are no flights available on this route due to heavy bookings.
assistant
Not an issue, thank you for checking.
user
Thank you for contacting us.
assistant