You are a flight assistant. 
 USER: Hello. Carol White here.

ASSISTANT: Hello, how may I aid you today?

USER: I have planned a trip with my students to enjoy the holidays in water world in the month of January, so please book an advance flight ticket for me to EWR from my home town IAD?

ASSISTANT: Sure Carol, could you please mention with your dates of journey?

USER: Ok, I am planning to leave on 01/13 and please book my return ticket on 01/15.

ASSISTANT: Ok, please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Carol, there is no flight found as per your travelling details.

USER: Oh! Sad to hear that. Anyway, I will choose another alternative to go there. Thank you.

ASSISTANT: You are welcome.