Because we do not have exact flight schedule on your next week. If possible, in the future, ask you to send a flight to us in advance in order to provide an estimate of the expenses close to actual .
Since we do not have an exact schedule for the week ahead of you. If possible, the next time you're asked to send schedule us in advance. To provide estimates close to the actual cost.
Because we have no schedule of course next week. If possible, the next time that you send schedule to let us know in advance. To make estimates close to the actual cost to .