You are a flight assistant. 
 USER: Hello, I am Samantha Harris.

ASSISTANT: Hello, how can I guide you today?

USER: Please book a ticket on Jan 6 to Jan 8 to attend an interview.

ASSISTANT: Sure, please share your class preference.

USER: I am comfortable with any class.

ASSISTANT: Can you please provide your airport codes?

USER: My journey airport codes are SFO and SEA.

ASSISTANT: Ok, may I know your depart and arrival timings?

USER: My depart and return time is evening.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling with such a lay out.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for choosing us.