You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can I have your name please?

USER: I am Susan Taylor.

ASSISTANT: How can I be the best at your service, Susan Taylor?

USER: The Cathedral of Christ light  is the seat of the Bishop of Oakland. So,  I would like to visit it on 10/17.

ASSISTANT: Ok, fine.

USER: Can you please reserve me a flight ticket?

ASSISTANT: To reserve a ticket, help me with your return date.

USER: After the trip, I will return on 10/19.

ASSISTANT: Have any preferences?

USER: Yes, Price should not exceed 500.

ASSISTANT: Let me know your landing point.

USER: My landing airport code is Oakland, OAK.

ASSISTANT: From which point, you are ready to travel ?

USER: Take off  airport  code is Philadelphia, PHL.

ASSISTANT: Wait a minute, I will check the flights for you.

USER: Sure, I will wait.

ASSISTANT: Unfortunately, there were no flights to reserve with your name due to having some technical issues.

USER: It's ok, I will check with another airline.

ASSISTANT: Fine.

USER: Thank you for your response.

ASSISTANT: Thank you for your time with us.