Hello.
user
Hello. How can I help you?
assistant
Can you help me to book a connecting flight from OAK to DFW?
user
Let me know your travelling dates.
assistant
I want to fly on 13 Oct and return on 15 Oct.
user
Do you have any preference?
assistant
I prefer to travel in business class.
user
Can I know your name?
assistant
I am Melissa Gonzalez.
user
Sorry, no flights found for your travelling dates.
assistant
Oh! that very sad to hear, thank you.
user
Thank you.
assistant