Hello.
user
Hello, how may I aid you today?
assistant
I am Thomas Harris. Can you help me booking a flight ticket from LGA to IAH?
user
Sure, may I know your travelling dates?
assistant
My travel dates are from Jun 23 to Jun 25.
user
Do you have any other requirements?
assistant
I would like to depart in the morning and return in the evening.
user
Can I know your class preference?
assistant
No.
user
Sorry, there are no flights available on your request.
assistant
No problem, thank you.
user
Thank you for choosing us.
assistant