You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Dorothy Hill here.

ASSISTANT: How can I assist you today?

USER: I would like to attend a seminar in New York, so can you please help me out with booking of a flight ticket from OAK on 08/06?

ASSISTANT: Sure, will you provide your destination airport code please?

USER: My destination airport code is EWR.

ASSISTANT: Please mention your return date also.

USER: Sure, I would like to return on 08/08.

ASSISTANT: Please give me a moment.

USER: Sure, take your time to check.

ASSISTANT: There is no flights found under your details.

USER: Oh! So sad to hear that. Anyway, I will choose another way to go there. Thank you for the information.

ASSISTANT: Welcome, have a great day.