customer: Hello,. I am Betty Anderson. 
 agent: Hello, how may I aid you today? 
 customer: Can you please book a flight ticket with direct flight to attend a event in San Francisco? 
 agent: Sure, help me with the trip dates? 
 customer: My journey dates are on Jan 27th and 29th. 
 agent: Do you have any preferences? 
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 agent: May I know your airport codes? 
 customer: My airport codes are, OAK to SFO. 
 agent: Thank you for your details, we do not found any flights running in your desired routes. 
 customer: Ok, no problem. Thank you. 
 agent: Thank you for reaching us.
customer: My return flight time should be in the evening.