You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Katherine Martinez.

ASSISTANT: How may I assist you?

USER: I have a orientation to attend in Orlando University in the month of January, so could you help me in booking a ticket?

ASSISTANT: Sure, can I know your nearest source and final destination airport codes?

USER: My source airport code is BOS and my destination airport code is OAK.

ASSISTANT: Ok,  can I know the dates on which your interested to travel?

USER: I would like to depart on 01/17 and return back on 01/19.

ASSISTANT: I am sorry to inform you, there are no flights found on given the schedule.

USER: That's so sad to hear, I will find any other means of transport to attend the orientation.

ASSISTANT: We hope you reach your destination safely. Thank you for reaching us.

USER: Thank you for your time.

ASSISTANT: You are welcome. We are much obliged to serve you.