You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I am Pamela Lewis. Can you help me in booking my flight ticket from SEA to OAK?

ASSISTANT: Sure, please share your planned travel dates.

USER: My trip dates will be Feb 21st to Feb 23rd.

ASSISTANT: Do you have any specific depart and return time preference?

USER: My return time should be in the morning.

ASSISTANT: Sure, Do you prefer either business or economy class?

USER: I am fine with any class.

ASSISTANT: Do you have any other preference?

USER: I need a break with my journey.

ASSISTANT: We don't have any flight which meets all your request.

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us.