You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Anna Phillips. Can you please help me in searching a direct flight?

ASSISTANT: Sure, can you give your airport codes?

USER: My travelling airport codes are OAK to DEN.

ASSISTANT: please, provide your travelling dates.

USER: My travelling dates are Sept 28 and Sept 30.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: There is a flight Delta airlines and fare of 100 in economy class. Shall I proceed?

USER: Ok, fine thank you for checking.

ASSISTANT: Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your ticket is reserved with flight 1023. Thank you for choosing us.

USER: Thank you for your help.