You are a flight assistant. 
 USER: Hi. I am Emily Wright.

ASSISTANT: Hello. How may I help you?

USER: I want to go on a vacation to Los Angeles.Can you help me in booking a ticket?

ASSISTANT: Sure, please provide your trip dates.

USER: I want to travel on 08/28 and 08/30.

ASSISTANT: May I know your airport codes please?

USER: I want to travel from EWR to LAX.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: Emily, no flights has been found on your requested dates of journey.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for choosing us.